Fix CI on "empty" branch

.gitlab-ci.yml

@@ -18,7 +18,6 @@ android:build-debug:
     - >
       if [ $(git tag -l "${TAG_NAME}") ]; then
         echo "Tag ${TAG_NAME} already exists."
-        exit 1
       fi
     - flutter clean
     - flutter packages get
@@ -48,7 +47,6 @@ application:release:
     - >
       if [ $(git tag -l "${TAG_NAME}") ]; then
         echo "Tag ${TAG_NAME} already exists."
-        exit 1
       else
         git tag -a "${TAG_NAME}" -m "Release ${VERSION_NAME}"
         git push origin "${TAG_NAME}"