feat(generator): update protoc to v3.15.3

proto-google-cloud-retail-v2/clirr-ignored-differences.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- see http://www.mojohaus.org/clirr-maven-plugin/examples/ignored-differences.html -->
+<differences>
+  <difference>
+    <differenceType>7012</differenceType>
+    <className>com/google/cloud/retail/v2/*OrBuilder</className>
+    <method>* has*(*)</method>
+  </difference>
+</differences>

proto-google-cloud-retail-v2/src/main/java/com/google/cloud/retail/v2/ImportErrorsConfig.java

@@ -154,6 +154,23 @@ public DestinationCase getDestinationCase() {
   }
 
   public static final int GCS_PREFIX_FIELD_NUMBER = 1;
+  /**
+   *
+   *
+   * <pre>
+   * Google Cloud Storage path for import errors. This must be an empty,
+   * existing Cloud Storage bucket. Import errors will be written to a file in
+   * this bucket, one per line, as a JSON-encoded
+   * `google.rpc.Status` message.
+   * </pre>
+   *
+   * <code>string gcs_prefix = 1;</code>
+   *
+   * @return Whether the gcsPrefix field is set.
+   */
+  public boolean hasGcsPrefix() {
+    return destinationCase_ == 1;
+  }
   /**
    *
    *
@@ -570,6 +587,24 @@ public Builder clearDestination() {
       return this;
     }
 
+    /**
+     *
+     *
+     * <pre>
+     * Google Cloud Storage path for import errors. This must be an empty,
+     * existing Cloud Storage bucket. Import errors will be written to a file in
+     * this bucket, one per line, as a JSON-encoded
+     * `google.rpc.Status` message.
+     * </pre>
+     *
+     * <code>string gcs_prefix = 1;</code>
+     *
+     * @return Whether the gcsPrefix field is set.
+     */
+    @java.lang.Override
+    public boolean hasGcsPrefix() {
+      return destinationCase_ == 1;
+    }
     /**
      *
      *

proto-google-cloud-retail-v2/src/main/java/com/google/cloud/retail/v2/ImportErrorsConfigOrBuilder.java

@@ -23,6 +23,21 @@ public interface ImportErrorsConfigOrBuilder
     // @@protoc_insertion_point(interface_extends:google.cloud.retail.v2.ImportErrorsConfig)
     com.google.protobuf.MessageOrBuilder {
 
+  /**
+   *
+   *
+   * <pre>
+   * Google Cloud Storage path for import errors. This must be an empty,
+   * existing Cloud Storage bucket. Import errors will be written to a file in
+   * this bucket, one per line, as a JSON-encoded
+   * `google.rpc.Status` message.
+   * </pre>
+   *
+   * <code>string gcs_prefix = 1;</code>
+   *
+   * @return Whether the gcsPrefix field is set.
+   */
+  boolean hasGcsPrefix();
   /**
    *
    *

synth.metadata

@@ -4,15 +4,15 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/java-retail.git",
-        "sha": "0ca8a72b896d63d2da372684c7fbaf502018afbc"
+        "sha": "9103ea862ef586c1a8e58e3da2227712cfa3328f"
       }
     },
     {
       "git": {
         "name": "googleapis",
         "remote": "https://github.com/googleapis/googleapis.git",
-        "sha": "af8f71dae961ee036a0ac52a1965270149a6b2c9",
-        "internalRef": "358516065"
+        "sha": "f6dd7e47620566925a4b3f1ce029e74e1b2f2516",
+        "internalRef": "359781040"
       }
     },
     {