Revert "Backport "HBASE-28879 Bump hbase-thirdparty to 4.1.9" to branch-2.6 (#6298)"

This reverts commit 988c84a.

Author: ndimiduk

pom.xml

@@ -608,11 +608,9 @@
     <external.protobuf.groupid>com.google.protobuf</external.protobuf.groupid>
     <external.protobuf.version>2.5.0</external.protobuf.version>
     <external.protoc.version>${external.protobuf.version}</external.protoc.version>
-    <!--
-      Version of protobuf that hbase uses internally (we shade our pb) Must match what is out
-      in hbase-thirdparty include.
-    -->
-    <internal.protobuf.version>4.28.2</internal.protobuf.version>
+    <!--Version of protobuf that hbase uses internally (we shade our pb)
+         Must match what is out in hbase-thirdparty include. -->
+    <internal.protobuf.version>4.26.1</internal.protobuf.version>
     <protobuf.plugin.version>0.6.1</protobuf.plugin.version>
     <thrift.path>thrift</thrift.path>
     <thrift.version>0.14.1</thrift.version>
@@ -671,7 +669,7 @@
         databind] must be kept in sync with the version of jackson-jaxrs-json-provider shipped in
         hbase-thirdparty.
     -->
-    <hbase-thirdparty.version>4.1.9</hbase-thirdparty.version>
+    <hbase-thirdparty.version>4.1.8</hbase-thirdparty.version>
     <!-- Coverage properties -->
     <jacoco.version>0.8.8</jacoco.version>
     <jacocoArgLine/>