[BOOK-257] chore: cd 'Upload artifact to Firebase App Distribution' step groups 수정

Author: easyhooon

.github/workflows/android-cd.yml

@@ -102,6 +102,6 @@ jobs:
                 with:
                     appId: ${{secrets.FIREBASE_RELEASE_APP_ID}}
                     serviceCredentialsFileContent: ${{ secrets.CREDENTIAL_FILE_CONTENT }}
-                    groups: testers
+                    groups: reed-android-testers
                     file: app/build/outputs/bundle/release/app-release.aab
                     releaseNotes: ${{ steps.firebase_release_note.outputs.notes }}