feat(generator): update protoc to v3.15.3

proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/LogEntry.java

@@ -558,6 +558,20 @@ public com.google.protobuf.AnyOrBuilder getProtoPayloadOrBuilder() {
   }
 
   public static final int TEXT_PAYLOAD_FIELD_NUMBER = 3;
+  /**
+   *
+   *
+   * <pre>
+   * The log entry payload, represented as a Unicode string (UTF-8).
+   * </pre>
+   *
+   * <code>string text_payload = 3;</code>
+   *
+   * @return Whether the textPayload field is set.
+   */
+  public boolean hasTextPayload() {
+    return payloadCase_ == 3;
+  }
   /**
    *
    *
@@ -2675,6 +2689,21 @@ public com.google.protobuf.AnyOrBuilder getProtoPayloadOrBuilder() {
       return protoPayloadBuilder_;
     }
 
+    /**
+     *
+     *
+     * <pre>
+     * The log entry payload, represented as a Unicode string (UTF-8).
+     * </pre>
+     *
+     * <code>string text_payload = 3;</code>
+     *
+     * @return Whether the textPayload field is set.
+     */
+    @java.lang.Override
+    public boolean hasTextPayload() {
+      return payloadCase_ == 3;
+    }
     /**
      *
      *

proto-google-cloud-logging-v2/src/main/java/com/google/logging/v2/LogEntryOrBuilder.java

@@ -179,6 +179,18 @@ public interface LogEntryOrBuilder
    */
   com.google.protobuf.AnyOrBuilder getProtoPayloadOrBuilder();
 
+  /**
+   *
+   *
+   * <pre>
+   * The log entry payload, represented as a Unicode string (UTF-8).
+   * </pre>
+   *
+   * <code>string text_payload = 3;</code>
+   *
+   * @return Whether the textPayload field is set.
+   */
+  boolean hasTextPayload();
   /**
    *
    *

synth.metadata

@@ -4,15 +4,15 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/java-logging.git",
-        "sha": "9cd8474fdcd313f08216642254d72de9ce1a3214"
+        "sha": "23ea72e4f371bfa1509983c41840427afb7a9384"
       }
     },
     {
       "git": {
         "name": "googleapis",
         "remote": "https://github.com/googleapis/googleapis.git",
-        "sha": "af8f71dae961ee036a0ac52a1965270149a6b2c9",
-        "internalRef": "358516065"
+        "sha": "f6dd7e47620566925a4b3f1ce029e74e1b2f2516",
+        "internalRef": "359781040"
       }
     },
     {