Bump netty4_version from 4.1.92.Final to 4.1.94.Final

Bumps `netty4_version` from 4.1.92.Final to 4.1.94.Final.

Updates `netty-all` from 4.1.92.Final to 4.1.94.Final
- [Commits](netty/netty@netty-4.1.92.Final...netty-4.1.94.Final)

Updates `netty-bom` from 4.1.92.Final to 4.1.94.Final
- [Commits](netty/netty@netty-4.1.92.Final...netty-4.1.94.Final)

---
updated-dependencies:
- dependency-name: io.netty:netty-all
  dependency-type: direct:development
  update-type: version-update:semver-patch
- dependency-name: io.netty:netty-bom
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

dubbo-dependencies-bom/pom.xml

@@ -96,7 +96,7 @@
         <javassist_version>3.29.2-GA</javassist_version>
         <bytebuddy.version>1.14.5</bytebuddy.version>
         <netty_version>3.2.10.Final</netty_version>
-        <netty4_version>4.1.92.Final</netty4_version>
+        <netty4_version>4.1.94.Final</netty4_version>
         <mina_version>2.2.1</mina_version>
         <grizzly_version>2.4.4</grizzly_version>
         <httpclient_version>4.5.14</httpclient_version>