Downgrade to protobuf 2.22.x

Because of issues in Dataflow and incompatibilities reported at grpc/grpc-java#10202

pom.xml

@@ -102,12 +102,11 @@
     <auto-value.version>1.10.2</auto-value.version>
     <avro.version>1.11.1</avro.version>
     <bouncycastle.version>1.70</bouncycastle.version>
-
     <beam.version>2.49.0</beam.version>
     <!--Ensure Beam SDK compatibility-->
     <!-- https://github.com/apache/beam/blob/release-2.49.0/buildSrc/src/main/groovy/org/apache/beam/gradle/BeamModulePlugin.groovy#L517 -->
     <google-cloud-libaries-bom.version>26.17.0</google-cloud-libaries-bom.version>
-    <grpc.version>1.55.1</grpc.version>
+    <grpc.version>1.55.3</grpc.version>
     <guava.version>32.1.1-jre</guava.version>
     <hamcrest.version>2.2</hamcrest.version>
     <junit.version>4.13.2</junit.version>
@@ -117,7 +116,8 @@
     <postgresql.version>42.6.0</postgresql.version>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-    <protobuf.version>3.23.4</protobuf.version>
+    <!--Note: https://github.com/grpc/grpc-java/issues/10202-->
+    <protobuf.version>3.22.5</protobuf.version>
     <slf4j.version>2.0.7</slf4j.version>
     <socket-factory.version>1.12.0</socket-factory.version>
   </properties>