chore(bazel): update protobuf to v3.21.7 (googleapis#726)

- [ ] Regenerate this pull request now.

PiperOrigin-RevId: 477955264

Source-Link: https://togithub.com/googleapis/googleapis/commit/a724450af76d0001f23602684c49cd6a4b3a5654

Source-Link: https://togithub.com/googleapis/googleapis-gen/commit/4abcbcaec855e74a0b22a4988cf9e0eb61a83094
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiNGFiY2JjYWVjODU1ZTc0YTBiMjJhNDk4OGNmOWUwZWI2MWE4MzA5NCJ9

Author: gcf-owl-bot[bot]

java-webrisk/README.md

@@ -56,13 +56,13 @@ implementation 'com.google.cloud:google-cloud-webrisk'
 If you are using Gradle without BOM, add this to your dependencies:
 
 ```Groovy
-implementation 'com.google.cloud:google-cloud-webrisk:2.2.4'
+implementation 'com.google.cloud:google-cloud-webrisk:2.2.5'
 ```
 
 If you are using SBT, add this to your dependencies:
 
 ```Scala
-libraryDependencies += "com.google.cloud" % "google-cloud-webrisk" % "2.2.4"
+libraryDependencies += "com.google.cloud" % "google-cloud-webrisk" % "2.2.5"
 ```
 
 ## Authentication