chore: publish ext branch as a tag (#7689)

Co-authored-by: Ghosh <kaustavg@3c22fb229ff6.ant.amazon.com>

.circleci/config.base.yml

@@ -889,24 +889,10 @@ workflows:
             - npm-publish
           requires:
             - test
-            - mock_e2e_tests
-            - graphql_e2e_tests
-            - integration_test
-            - done_with_pkg_linux_e2e_tests
-            - amplify_sudo_install_test
-            - amplify_console_integration_tests
-            - amplify_migration_tests_latest
-            - amplify_migration_tests_v4
-            - amplify_migration_tests_v4_30_0
-            - amplify_migration_tests_non_multi_env_layers
-            - amplify_migration_tests_multi_env_layers
-            - github_prerelease_install_sanity_check
           filters:
             branches:
               only:
-                - release
-                - master
-                - beta
+                - ext
       - github_release:
           context: github-publish
           requires:

package.json

@@ -32,6 +32,7 @@
     "pkg-all-local": "yarn verdaccio-start && yarn verdaccio-connect && yarn publish-to-verdaccio && yarn pkg-all && yarn verdaccio-disconnect",
     "publish:master": "lerna publish --canary --force-publish --preid=alpha --exact --include-merged-tags --conventional-prerelease --no-verify-access --yes",
     "publish:beta": "lerna publish --exact --dist-tag=beta --preid=beta --conventional-commits --conventional-prerelease --message 'chore(release): Publish [ci skip]' --no-verify-access --yes",
+    "publish:ext": "lerna publish --exact --dist-tag=ext --preid=ext --conventional-commits --conventional-prerelease --message 'chore(release): Publish [ci skip]' --no-verify-access --yes",
     "publish:release": "lerna publish --conventional-commits --exact --yes --message 'chore(release): Publish [ci skip]' --no-verify-access",
     "postpublish:release": "git fetch . release:master && git push origin master",
     "yarn-use-bash": "yarn config set script-shell /bin/bash",