deps: update dependency com.google.protobuf:protobuf-bom to v3.14.0 (#217)

Author: renovate-bot

pom.xml

@@ -58,7 +58,7 @@
     <grpc.version>1.33.1</grpc.version>
     <gax.version>1.60.1</gax.version>
     <guava.version>30.0-android</guava.version>
-    <protobuf.version>3.13.0</protobuf.version>
+    <protobuf.version>3.14.0</protobuf.version>
     <google.api-common.version>1.10.1</google.api-common.version>
     <google.common-protos.version>2.0.1</google.common-protos.version>
     <google.core.version>1.93.10</google.core.version>