github: Don't search for coverage results

We explicitly pass the final .info file prepared with lcov, so there is
no need to search for other files (that then won't work anyway).  The
search also finds the uncleaned .info file, which includes the test code.

The latter should have gotten ignored anyway, but the patterns are
apparently not correct anymore. So fixing that as well just to be sure.

.codecov.yml

@@ -1,3 +1,3 @@
 ignore:
-  - "*/suites/*"
-  - "*/tests/*"
+  - "**/suites/"
+  - "**/tests/"

.github/workflows/linux.yml

@@ -78,6 +78,7 @@ jobs:
       - if: ${{ success() && matrix.test == 'coverage' }}
         uses: codecov/codecov-action@v4
         with:
+          disable_search: true
           fail_ci_if_error: true
           file: coverage/coverage.cleaned.info
           token: ${{ secrets.CODECOV_TOKEN }}