CircleCI: Publish pod when the repo is tagged

Author: jtreanor

.circleci/config.yml

@@ -2,7 +2,7 @@ version: 2.1
 
 orbs:
   # This uses the iOS Orb located at https://github.com/wordpress-mobile/circleci-orbs
-  ios: wordpress-mobile/[email protected].24
+  ios: wordpress-mobile/[email protected].35
 
 workflows:
   test_and_validate:
@@ -19,3 +19,13 @@ workflows:
           xcode-version: "10.2.0"
           podspec-path: WordPressKit.podspec
           update-specs-repo: true
+      - ios/publish-podspec:
+          name: Publish to Trunk
+          xcode-version: "10.2.0"
+          podspec-path: WordPressKit.podspec
+          post-to-slack: true
+          filters:
+            tags:
+              only: /.*/
+            branches:
+              ignore: /.*/