fix(ci): 20.04 packages

.github/workflows/tests.yaml

@@ -50,7 +50,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-20.04]
-        python-version: ["3.7", "3.8", "3.9", "3.10"]
+        python-version: ["3.8", "3.9", "3.10"]
         include:
           - adjective: focal
           - os: ubuntu-22.04
@@ -71,6 +71,7 @@ jobs:
         run: |
           sudo apt update
           sudo apt install -y libapt-pkg-dev intltool fuse-overlayfs python3-apt
+          sudo apt install -y curl findutils gcc git pkg-config
       - name: Install general python dependencies
         run: |
           pip install python-apt@https://launchpad.net/ubuntu/+archive/primary/+sourcefiles/python-apt/2.0.1ubuntu0.20.04.1/python-apt_2.0.1ubuntu0.20.04.1.tar.xz