Replace set-output usage with GITHUB_OUTPUT (#252)

* GitHub has deprecated set-output and now needs to add the content to the GITHUB_OUTPUT file

* Update tests too

* Fix tests and shell-format changes

* Revert yarn.lock changes

README.md

@@ -345,7 +345,7 @@ The steps in your workflow might look like this:
 - name: Get last commit message
   id: last-commit-message
   run: |
-    echo "::set-output name=msg::$(git log -1 --pretty=%s)"
+    echo "msg=$(git log -1 --pretty=%s)" >> $GITHUB_OUTPUT
 
 - uses: stefanzweifel/git-auto-commit-action@v4
   with:

entrypoint.sh

@@ -11,7 +11,7 @@ _main() {
 
     if _git_is_dirty || "$INPUT_SKIP_DIRTY_CHECK"; then
 
-        echo "::set-output name=changes_detected::true";
+        echo "changes_detected=true" >> $GITHUB_OUTPUT;
 
         _switch_to_branch
 
@@ -24,7 +24,7 @@ _main() {
         _push_to_github
     else
 
-        echo "::set-output name=changes_detected::false";
+        echo "changes_detected=false" >> $GITHUB_OUTPUT;
 
         echo "Working tree clean. Nothing to commit.";
     fi
@@ -101,7 +101,7 @@ _local_commit() {
         --author="$INPUT_COMMIT_AUTHOR" \
         ${INPUT_COMMIT_OPTIONS:+"${INPUT_COMMIT_OPTIONS_ARRAY[@]}"};
 
-    echo "::set-output name=commit_hash::$(git rev-parse HEAD)";
+    echo "commit_hash=$(git rev-parse HEAD)" >> $GITHUB_OUTPUT;
 }
 
 _tag_commit() {