chore(bazel): update protobuf to v3.21.3 (#496)

- [ ] 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-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/Control.java

@@ -2496,8 +2496,8 @@ public int getSolutionTypesValue(int index) {
      * repeated .google.cloud.retail.v2alpha.SolutionType solution_types = 6 [(.google.api.field_behavior) = REQUIRED, (.google.api.field_behavior) = IMMUTABLE];
      * </code>
      *
-     * @param index The index of the value to return.
-     * @return The enum numeric value on the wire of solutionTypes at the given index.
+     * @param index The index to set the value at.
+     * @param value The enum numeric value on the wire for solutionTypes to set.
      * @return This builder for chaining.
      */
     public Builder setSolutionTypesValue(int index, int value) {
@@ -2797,8 +2797,8 @@ public int getSearchSolutionUseCaseValue(int index) {
      * repeated .google.cloud.retail.v2alpha.SearchSolutionUseCase search_solution_use_case = 7 [(.google.api.field_behavior) = REQUIRED];
      * </code>
      *
-     * @param index The index of the value to return.
-     * @return The enum numeric value on the wire of searchSolutionUseCase at the given index.
+     * @param index The index to set the value at.
+     * @param value The enum numeric value on the wire for searchSolutionUseCase to set.
      * @return This builder for chaining.
      */
     public Builder setSearchSolutionUseCaseValue(int index, int value) {

java-retail/proto-google-cloud-retail-v2alpha/src/main/java/com/google/cloud/retail/v2alpha/ServingConfig.java

@@ -6036,8 +6036,8 @@ public int getSolutionTypesValue(int index) {
      * repeated .google.cloud.retail.v2alpha.SolutionType solution_types = 19 [(.google.api.field_behavior) = REQUIRED, (.google.api.field_behavior) = IMMUTABLE];
      * </code>
      *
-     * @param index The index of the value to return.
-     * @return The enum numeric value on the wire of solutionTypes at the given index.
+     * @param index The index to set the value at.
+     * @param value The enum numeric value on the wire for solutionTypes to set.
      * @return This builder for chaining.
      */
     public Builder setSolutionTypesValue(int index, int value) {

java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/Control.java

@@ -2292,8 +2292,8 @@ public int getSolutionTypesValue(int index) {
      * repeated .google.cloud.retail.v2beta.SolutionType solution_types = 6 [(.google.api.field_behavior) = REQUIRED, (.google.api.field_behavior) = IMMUTABLE];
      * </code>
      *
-     * @param index The index of the value to return.
-     * @return The enum numeric value on the wire of solutionTypes at the given index.
+     * @param index The index to set the value at.
+     * @param value The enum numeric value on the wire for solutionTypes to set.
      * @return This builder for chaining.
      */
     public Builder setSolutionTypesValue(int index, int value) {

java-retail/proto-google-cloud-retail-v2beta/src/main/java/com/google/cloud/retail/v2beta/ServingConfig.java

@@ -6033,8 +6033,8 @@ public int getSolutionTypesValue(int index) {
      * repeated .google.cloud.retail.v2beta.SolutionType solution_types = 19 [(.google.api.field_behavior) = REQUIRED, (.google.api.field_behavior) = IMMUTABLE];
      * </code>
      *
-     * @param index The index of the value to return.
-     * @return The enum numeric value on the wire of solutionTypes at the given index.
+     * @param index The index to set the value at.
+     * @param value The enum numeric value on the wire for solutionTypes to set.
      * @return This builder for chaining.
      */
     public Builder setSolutionTypesValue(int index, int value) {