Bump actions version (#14017)

> Error: This request has been automatically failed because it uses a deprecated version of `actions/cache: v2`. Please update your workflow to use v3/v4 of actions/cache to avoid interruptions

Author: singiamtel

.github/workflows/reports.yml

@@ -17,12 +17,12 @@ jobs:
     if: github.repository == 'AliceO2Group/AliceO2'
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up Python 3.10
       uses: actions/setup-python@v5
       with:
         python-version: '3.10'
-    - uses: actions/cache@v2
+    - uses: actions/cache@v4
       name: Configure pip caching
       with:
         path: ~/.cache/pip