automaticRelease.yml: Use latest ubuntu

GH action did no longer work because 20.04 LTS was deprecated

Author: schnatterer

.github/workflows/automaticRelease.yml

@@ -9,7 +9,7 @@ on:
 jobs:
   check_for_new_helm_version:
     name: Update on new release
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     steps:
       - 
         run: sudo apt-get install -y jq

.github/workflows/testScripts.yml

@@ -6,7 +6,7 @@ on:
 jobs:
   test_scripts:
     name: Test scripts
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     steps:
       -
         name: Checkout