feat(generator): update protoc to v3.15.3

proto-google-cloud-monitoring-dashboard-v1/src/main/java/com/google/monitoring/dashboard/v1/TimeSeriesQuery.java

@@ -315,6 +315,20 @@ public com.google.monitoring.dashboard.v1.TimeSeriesFilterRatio getTimeSeriesFil
   }
 
   public static final int TIME_SERIES_QUERY_LANGUAGE_FIELD_NUMBER = 3;
+  /**
+   *
+   *
+   * <pre>
+   * A query used to fetch time series.
+   * </pre>
+   *
+   * <code>string time_series_query_language = 3;</code>
+   *
+   * @return Whether the timeSeriesQueryLanguage field is set.
+   */
+  public boolean hasTimeSeriesQueryLanguage() {
+    return sourceCase_ == 3;
+  }
   /**
    *
    *
@@ -1291,6 +1305,21 @@ public Builder clearTimeSeriesFilterRatio() {
       return timeSeriesFilterRatioBuilder_;
     }
 
+    /**
+     *
+     *
+     * <pre>
+     * A query used to fetch time series.
+     * </pre>
+     *
+     * <code>string time_series_query_language = 3;</code>
+     *
+     * @return Whether the timeSeriesQueryLanguage field is set.
+     */
+    @java.lang.Override
+    public boolean hasTimeSeriesQueryLanguage() {
+      return sourceCase_ == 3;
+    }
     /**
      *
      *

proto-google-cloud-monitoring-dashboard-v1/src/main/java/com/google/monitoring/dashboard/v1/TimeSeriesQueryOrBuilder.java

@@ -97,6 +97,18 @@ public interface TimeSeriesQueryOrBuilder
   com.google.monitoring.dashboard.v1.TimeSeriesFilterRatioOrBuilder
       getTimeSeriesFilterRatioOrBuilder();
 
+  /**
+   *
+   *
+   * <pre>
+   * A query used to fetch time series.
+   * </pre>
+   *
+   * <code>string time_series_query_language = 3;</code>
+   *
+   * @return Whether the timeSeriesQueryLanguage field is set.
+   */
+  boolean hasTimeSeriesQueryLanguage();
   /**
    *
    *

synth.metadata

@@ -4,15 +4,15 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/java-monitoring-dashboards.git",
-        "sha": "abb59408021cabc17b08b0a6126025ff9ccdedf8"
+        "sha": "29e835c080222c2a6e0409d704a27de2879e25aa"
       }
     },
     {
       "git": {
         "name": "googleapis",
         "remote": "https://github.com/googleapis/googleapis.git",
-        "sha": "af8f71dae961ee036a0ac52a1965270149a6b2c9",
-        "internalRef": "358516065"
+        "sha": "f6dd7e47620566925a4b3f1ce029e74e1b2f2516",
+        "internalRef": "359781040"
       }
     },
     {