[![WhiteSource Renovate](https://app.renovatebot.com/images/banner.svg)](https://renovatebot.com)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [google-cloud-spanner](https://togithub.com/googleapis/python-spanner) | `==3.3.0` -> `==3.4.0` | [![age](https://badges.renovateapi.com/packages/pypi/google-cloud-spanner/3.4.0/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/pypi/google-cloud-spanner/3.4.0/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/pypi/google-cloud-spanner/3.4.0/compatibility-slim/3.3.0)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/pypi/google-cloud-spanner/3.4.0/confidence-slim/3.3.0)](https://docs.renovatebot.com/merge-confidence/) |

---

### Release Notes

<details>
<summary>googleapis/python-spanner</summary>

### [`v3.4.0`](https://togithub.com/googleapis/python-spanner/blob/master/CHANGELOG.md#&#8203;340-httpswwwgithubcomgoogleapispython-spannercomparev330v340-2021-04-29)

[Compare Source](https://togithub.com/googleapis/python-spanner/compare/v3.3.0...v3.4.0)

##### Features

-   add samples for CMEK support ([#&#8203;275](https://www.github.com/googleapis/python-spanner/issues/275)) ([f8d9bd3](https://www.github.com/googleapis/python-spanner/commit/f8d9bd33e04675a8dca148c2fae4a9133beebbca))
-   added support for numeric field for python decimal value ([#&#8203;316](https://www.github.com/googleapis/python-spanner/issues/316)) ([070a171](https://www.github.com/googleapis/python-spanner/commit/070a1712dc34afb68105194060bb2fe6177fbac5))
-   **dbapi:** remove string conversion for numeric fields ([#&#8203;317](https://www.github.com/googleapis/python-spanner/issues/317)) ([772aa3c](https://www.github.com/googleapis/python-spanner/commit/772aa3c2ffbdf3f863c09db176697b3ad70adbcf))

##### Bug Fixes

-   correctly set resume token when restarting streams ([#&#8203;314](https://www.github.com/googleapis/python-spanner/issues/314)) ([0fcfc23](https://www.github.com/googleapis/python-spanner/commit/0fcfc2301246d3f20b6fbffc1deae06f16721ec7))
-   support INSERT from SELECT clause with args ([#&#8203;306](https://www.github.com/googleapis/python-spanner/issues/306)) ([0dcda5e](https://www.github.com/googleapis/python-spanner/commit/0dcda5e21f8fb30ee611fddf0829684d86ced0ef))

##### Performance Improvements

-   use protobuf for metadata to reduce type conversions ([#&#8203;325](https://www.github.com/googleapis/python-spanner/issues/325)) ([5110b9b](https://www.github.com/googleapis/python-spanner/commit/5110b9bc31804db9777a23fca60360119840640c))

</details>

---

### Configuration

:date: **Schedule**: At any time (no schedule defined).

:vertical_traffic_light: **Automerge**: Disabled by config. Please merge this manually once you are satisfied.

:recycle: **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

:no_bell: **Ignore**: Close this PR and you won't be reminded about this update again.

---

 - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box.

---

This PR has been generated by [WhiteSource Renovate](https://renovate.whitesourcesoftware.com). View repository job log [here](https://app.renovatebot.com/dashboard#github/googleapis/python-spanner).

Co-authored-by: google-cloud-policy-bot[bot] <80869356+google-cloud-policy-bot[bot]@users.noreply.github.com>

…d by Spanner (#340)

* feat: updated googleapis proto changes for request tags

* feat: added support for numberic for python decimal value

* feat: add decimal validation for numeric precission and scale supported by spanner

* fix: moved decimal validation from  spanner_dbapi to spanner_v1/helper function

…c_precision_and_scale_valid (#350)

)

Co-authored-by: larkee <larkee@users.noreply.github.com>

There is [an issue](https://github.com/googleapis/python-spanner/blob/master/owlbot.py#L30) in the `owlbot.py` file added in #319 in that [s.remove_staging_dirs()](https://github.com/googleapis/synthtool/blob/master/synthtool/transforms.py#L309) should only be called once after all the files are copied over.  [get_staging_dirs()](https://github.com/googleapis/synthtool/blob/master/synthtool/transforms.py#L280) will only return staging directories that exist.

* chore: fix owlbot.py to copy changes from googleapis-gen

* feat(spanner): add progress field to UpdateDatabaseDdlMetadata

* use the latest owlbot post processor image

* chore: move import of CommitResponse

* add workarounds in owlbot.py

* run post processor

* update owlbot.py to copy multiple folders/versions from googleapis-gen

* feat: add query statistics package support

* style: fix lint

* test: reorder env mocks

Co-authored-by: larkee <larkee@users.noreply.github.com>

* fix: for opentelemetry status code spec change

* fix: corrected open telemetry tests to work with latest open telemetry specs

* fix: correct open telemetry tests status code

* fix: open telemetry schema related changes and fixes for tests to work with in memory exporter

* fix: variable name correction for ot_exporter

* fix: correct variable name from memeory_exporter to ot_exporter

* fix: remove patch for opentelemetry.util.time with _constant_time as it was not used

* refactor: correct opentelemetry.util.time to opentelemetry.util._time

* ci: update packages for open telemetry

* refactor: increased version of open telemetry as per new specs

* fix: changed opentelemetry dependency version

* updated constraints file with opentelemetry-instrumentation >= 0.20b0

* fix: added ot_exporter clear call after reload to clear out the exporter memeory

* fix: removed repeated constraints for different versions of python

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>