ci: run CI on release branches (VowpalWabbit#2942)

Update version to 8.10.0 (VowpalWabbit#2912)

Update version to 8.9.2

Update version to 8.9.1

Update version to 8.9.0 (VowpalWabbit#2639)

Co-authored-by: olgavrou <olgavrou@gmail.com>

Update version to 8.8.1

New version (VowpalWabbit#2181)

* Fix style with clang-format (before releasing 8.8.0)

* Update verson.txt for release 8.8.0

* Revert "Fix style with clang-format (before releasing 8.8.0)"

This reverts commit df08035.

* succesfully ran clang-format

Incrementing version to 8.7.0.post1 for pypi

Update version to 8.7.0 (VowpalWabbit#1926)

* change semantics of lambda

* Fix style with clang-format (before releasing 8.7.0)

* Update verson.txt for release 8.7.0

* Revert "Fix style with clang-format (before releasing 8.7.0)"

This reverts commit 22ad628.

Change references from SolutionDir to ProjectDir

vw.vcxprojx has wrong references, they get exposed when
added to another Visual Studio Solution.