test.yml: add step for installing bash 5.3

Signed-off-by: Arthur Zamarin <arthurzam@gentoo.org>

Author: arthurzam

.github/workflows/test.yml

@@ -69,6 +69,13 @@ jobs:
       if: ${{ matrix.os == 'macos-latest' }}
       run: brew install bash
 
+    - name: Install bash 5.3
+      if: ${{ matrix.os == 'ubuntu-latest' }}
+      run: |
+        wget http://archive.ubuntu.com/ubuntu/pool/universe/b/bash/bash-static_5.3-1ubuntu1_amd64.deb
+        dpkg --fsys-tarfile  bash-static_5.3-1ubuntu1_arm64.deb | tar -xO ./usr/bin/bash-static > /usr/local/bin/bash
+        chmod +x /usr/local/bin/bash
+
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip