Bug fixes

• #6993: Allowing for empty if blocks, preventing Style/SafeNavigation from crashing. (@RicardoTrindade)
• #6995: Fix an incorrect auto-correct for Style/RedundantParentheses when enclosed in parentheses at while-post or until-post. (@koic)
• #6996: Fix a false positive for Style/RedundantFreeze when freezing the result of String#*. (@bquorning)
• #6998: Fix autocorrect of Naming/RescuedExceptionsVariableName to also rename all references to the variable. (@Darhazer)
• #6992: Fix unknown default configuration for Layout/IndentFirstParameter cop. (@drenmi)
• #6972: Fix a false positive for Style/MixinUsage when using inside block and if condition is after include. (@koic)
• #6738: Prevent auto-correct conflict of Style/Next and Style/SafeNavigation. (@hoshinotsuyoshi)
• #6847: Fix Style/BlockDelimiters to properly check if the node is chaned when braces_for_chaining is set. (@att14)