Release v3.0.0-alpha.9

Merge branch 'master' into 3.0-merge

# Conflicts:
#	.github/workflows/test.yml
#	phpstan.neon
#	src/kafka/src/Producer.php
#	src/load-balancer/src/Node.php
#	src/retry/tests/RetryAnnotationAspectTest.php
#	src/session/src/Handler/FileHandler.php