chore(bazel): update protobuf to v3.21.3 (#931)

- [ ] 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

proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/CloudStorageOptions.java

@@ -2611,8 +2611,8 @@ public int getFileTypesValue(int index) {
      *
      * <code>repeated .google.privacy.dlp.v2.FileType file_types = 5;</code>
      *
-     * @param index The index of the value to return.
-     * @return The enum numeric value on the wire of fileTypes at the given index.
+     * @param index The index to set the value at.
+     * @param value The enum numeric value on the wire for fileTypes to set.
      * @return This builder for chaining.
      */
     public Builder setFileTypesValue(int index, int value) {

proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/InfoTypeDescription.java

@@ -1322,8 +1322,8 @@ public int getSupportedByValue(int index) {
      *
      * <code>repeated .google.privacy.dlp.v2.InfoTypeSupportedBy supported_by = 3;</code>
      *
-     * @param index The index of the value to return.
-     * @return The enum numeric value on the wire of supportedBy at the given index.
+     * @param index The index to set the value at.
+     * @param value The enum numeric value on the wire for supportedBy to set.
      * @return This builder for chaining.
      */
     public Builder setSupportedByValue(int index, int value) {

proto-google-cloud-dlp-v2/src/main/java/com/google/privacy/dlp/v2/InspectConfig.java

@@ -4996,8 +4996,8 @@ public int getContentOptionsValue(int index) {
      *
      * <code>repeated .google.privacy.dlp.v2.ContentOption content_options = 8;</code>
      *
-     * @param index The index of the value to return.
-     * @return The enum numeric value on the wire of contentOptions at the given index.
+     * @param index The index to set the value at.
+     * @param value The enum numeric value on the wire for contentOptions to set.
      * @return This builder for chaining.
      */
     public Builder setContentOptionsValue(int index, int value) {