chore: add chart maintainers

Author: egabancho

.github/workflows/lint-test.yml

@@ -10,7 +10,7 @@ on:
 
 jobs:
   lint-test:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     steps:
       - name: Checkout
         uses: actions/checkout@v3

charts/invenio/Chart.yaml

@@ -13,6 +13,9 @@ keywords:
   - multimedia-repository
 type: application
 version: 0.5.3
+maintainers:
+  - name: CERN
+    email: [email protected]
 dependencies:
   - name: opensearch
     condition: opensearch.enabled