[infra] allow to auto-execute release process for OpAmp.* packages (#3143)

Author: Kielek

.github/workflows/publish-packages.yml

@@ -8,6 +8,7 @@ on:
       - 'Extensions.*-*'
       - 'Extensions-*'
       - 'Instrumentation.*-*'
+      - 'OpAmp.*-*'
       - 'PersistentStorage-*'
       - 'Resources.*-*'
       - 'Sampler.*-*'