fix actions script path

Author: 0marperez

.github/actions/artifact-size-metrics/calculate-and-upload/action.yml

@@ -20,5 +20,5 @@ runs:
         UPLOAD: ${{ inputs.upload }}
         RELEASE_METRICS: ${{ inputs.release_metrics }}
       run: |
-        chmod +x ../utils/calculate-and-upload/main.sh
-        ../utils/calculate-and-upload/main.sh
+        chmod +x $GITHUB_ACTION_PATH/../utils/calculate-and-upload/main.sh
+        $GITHUB_ACTION_PATH/../utils/calculate-and-upload/main.sh

.github/actions/artifact-size-metrics/download-and-process/action.yml

@@ -19,8 +19,8 @@ runs:
       run: |
         pwd
         ls ../
-        chmod +x ../utils/download-and-process/main.sh        
-        ../utils/download-and-process/main.sh
+        chmod +x $GITHUB_ACTION_PATH/../utils/download-and-process/main.sh        
+        $GITHUB_ACTION_PATH/../utils/download-and-process/main.sh
 
     - name: Large size increase?
       if: ${{ !contains(github.event.pull_request.labels.*.name, 'acknowledge-artifact-size-increase') }}