chore(bazel): update protobuf to v3.21.3 (#505)

- [ ] Regenerate this pull request now.

chore(bazel): update gax-java to 2.18.4

PiperOrigin-RevId: 463115700

Source-Link: googleapis/googleapis@52130a9

Source-Link: https://github.com/googleapis/googleapis-gen/commit/6a4d9d9bb3afb20b0f5fa4f5d9f6740b1d0eb19a
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiNmE0ZDlkOWJiM2FmYjIwYjBmNWZhNGY1ZDlmNjc0MGIxZDBlYjE5YSJ9

Author: gcf-owl-bot[bot]

java-os-config/proto-google-cloud-os-config-v1/src/main/java/com/google/cloud/osconfig/v1/PatchJobs.java

@@ -27850,8 +27850,8 @@ public int getClassificationsValue(int index) {
        * repeated .google.cloud.osconfig.v1.WindowsUpdateSettings.Classification classifications = 1;
        * </code>
        *
-       * @param index The index of the value to return.
-       * @return The enum numeric value on the wire of classifications at the given index.
+       * @param index The index to set the value at.
+       * @param value The enum numeric value on the wire for classifications to set.
        * @return This builder for chaining.
        */
       public Builder setClassificationsValue(int index, int value) {

java-os-config/proto-google-cloud-os-config-v1beta/src/main/java/com/google/cloud/osconfig/v1beta/PatchJobs.java

@@ -27825,8 +27825,8 @@ public int getClassificationsValue(int index) {
        * repeated .google.cloud.osconfig.v1beta.WindowsUpdateSettings.Classification classifications = 1;
        * </code>
        *
-       * @param index The index of the value to return.
-       * @return The enum numeric value on the wire of classifications at the given index.
+       * @param index The index to set the value at.
+       * @param value The enum numeric value on the wire for classifications to set.
        * @return This builder for chaining.
        */
       public Builder setClassificationsValue(int index, int value) {