chore(bazel): update protobuf to v3.21.7 (googleapis#219)

- [ ] 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-storage-transfer/README.md

@@ -19,20 +19,20 @@ If you are using Maven, add this to your pom.xml file:
 <dependency>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-storage-transfer</artifactId>
-  <version>1.3.0</version>
+  <version>1.3.1</version>
 </dependency>
 ```
 
 If you are using Gradle without BOM, add this to your dependencies:
 
 ```Groovy
-implementation 'com.google.cloud:google-cloud-storage-transfer:1.3.0'
+implementation 'com.google.cloud:google-cloud-storage-transfer:1.3.1'
 ```
 
 If you are using SBT, add this to your dependencies:
 
 ```Scala
-libraryDependencies += "com.google.cloud" % "google-cloud-storage-transfer" % "1.3.0"
+libraryDependencies += "com.google.cloud" % "google-cloud-storage-transfer" % "1.3.1"
 ```
 
 ## Authentication