chore(main): release 2.12.3 (#335)

🤖 I have created a release *beep* *boop*
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## [2.12.3](https://togithub.com/googleapis/gax-go/compare/v2.12.2...v2.12.3) (2024-03-14)


### Bug Fixes

* bump protobuf dep to v1.33 ([#333](https://togithub.com/googleapis/gax-go/issues/333)) ([2892b22](https://togithub.com/googleapis/gax-go/commit/2892b22c1ae8a70dec3448d82e634643fe6c1be2))

---
This PR was generated with [Release Please](https://togithub.com/googleapis/release-please). See [documentation](https://togithub.com/googleapis/release-please#release-please).

v2/.release-please-manifest.json

@@ -1,3 +1,3 @@
 {
-    "v2": "2.12.2"
+    "v2": "2.12.3"
 }

v2/CHANGES.md

@@ -1,5 +1,12 @@
 # Changelog
 
+## [2.12.3](https://github.com/googleapis/gax-go/compare/v2.12.2...v2.12.3) (2024-03-14)
+
+
+### Bug Fixes
+
+* bump protobuf dep to v1.33 ([#333](https://github.com/googleapis/gax-go/issues/333)) ([2892b22](https://github.com/googleapis/gax-go/commit/2892b22c1ae8a70dec3448d82e634643fe6c1be2))
+
 ## [2.12.2](https://github.com/googleapis/gax-go/compare/v2.12.1...v2.12.2) (2024-02-23)
 
 
@@ -119,4 +126,3 @@
 ### Miscellaneous Chores
 
 * **v2:** bump release-please processing ([#192](https://github.com/googleapis/gax-go/issues/192)) ([56172f9](https://github.com/googleapis/gax-go/commit/56172f971d1141d7687edaac053ad3470af76719))
-

v2/internal/version.go

@@ -30,4 +30,4 @@
 package internal
 
 // Version is the current tagged release of the library.
-const Version = "2.12.2"
+const Version = "2.12.3"