deps: Update the Java code generator (gapic-generator-java) to 2.23.1 (…

…#1846)

* chore: Update the Java code generator (gapic-generator-java) to 2.23.1

PiperOrigin-RevId: 549674836

Source-Link: googleapis/googleapis@3b7a121

Source-Link: /~https://github.com/googleapis/googleapis-gen/commit/2d643a4eff8c8ef4c9d5a2e59d2a0ca7c991eab6
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiMmQ2NDNhNGVmZjhjOGVmNGM5ZDVhMmU1OWQyYTBjYTdjOTkxZWFiNiJ9

* 🦉 Updates from OwlBot post-processor

See /~https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

---------

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>