Added xcode select to latest

Author: Reedyuk

.github/workflows/publish.yml

@@ -28,6 +28,9 @@ jobs:
         run: ./gradlew :updateVersions
       - name: Grant execute permission for gradlew
         run: chmod +x gradlew
+      - uses: maxim-lobanov/setup-xcode@v1
+        with:
+          xcode-version: latest-stable
       - name: Publish Firebase Analytics
         run: ./gradlew :firebase-analytics:publish
       - name: Publish Firebase App