ci-license-scan: Remove non ascii chars from debian override

The version of scan-copyrights from Trixie tries to parse the copyright
data to provide cleaner information. At the same time, this version
is more strict on the data use to fill debian/fill.copyright.blanks.yml,
and in case of non ascii characters the tool exits with error.

Since ci-license-scan fill the file with data, make sure that it only
adds ascii characters to the copyright.

Signed-off-by: Walter Lozano <walter.lozano@collabora.com>

tools/ci-license-scan

@@ -311,7 +311,9 @@ def configure_scanner():
         if debian_license and "debian/" not in copyright_overrides:
             copyright_overrides["debian/"] = {
                 "license": debian_license.synopsis,
-                "copyright": debian_copyright.strip(),
+                "copyright": re.sub(
+                    r"[^\x0A,\x20-\x7E]", r"", debian_copyright
+                ).strip(),
             }
     except Exception:
         pass