Use absolute path when calling semver-tool

Author: flobernd

action.yml

@@ -54,15 +54,17 @@ runs:
         version="${version#tags/}"
         version="${version#$INPUT_PREFIX}"
 
-        status=$(semver-tool/semver.sh validate $version)
+        semvertool="$GITHUB_ACTION_PATH/semver-tool/semver.sh"
+
+        status=$($semvertool validate $version)
         if [[ "$status" != "valid" ]]; then
             echo ::error ::Version $version does not match the semver scheme 'X.Y.Z(-PRERELEASE)(+BUILD)'
             exit 1
         fi
 
-        major=$(semver-tool/semver.sh get major $version)
-        minor=$(semver-tool/semver.sh get minor $version)
-        prerelease=$(semver-tool/semver.sh get prerelease $version)
+        major=$($semvertool get major $version)
+        minor=$($semvertool get minor $version)
+        prerelease=$($semvertool get prerelease $version)
 
         echo "version=$version" >> $GITHUB_OUTPUT
         echo "major=$major" >> $GITHUB_OUTPUT