workflows/static-analysis.yml: Downgrade the python-debian package

This is a workaround for [1], see also [2].

[1] AttributeError: 'TypeVar' object attribute '__doc__' is read-only
    Error: Process completed with exit code 1.
[2] fsfe/reuse-tool#427

Signed-off-by: Frank Viernau <[email protected]>

Author: fviernau

.github/workflows/static-analysis.yml

@@ -54,4 +54,5 @@ jobs:
     - name: Check REUSE Compliance
       run: |
         pip install --user reuse
+        pip install --user --force-reinstall python-debian==0.1.40
         ~/.local/bin/reuse lint