try to side-load a newer bash version from debian

Author: GB609

.github/workflows/tests.yml

@@ -45,8 +45,8 @@ jobs:
 
       - name: Update Bash
         run: |
-          sudo apt-get update
-          sudo apt-get install --only-upgrade bash
+          wget -O tmp/bash.deb http://ftp.de.debian.org/debian/pool/main/b/bash/bash_5.3-1_amd64.deb
+          sudo dpkg -i tmp/bash.deb
 
       - name: Bash Version
         run: bash --version