Re-add explicit . for gcov folder

Author: lefticus

.github/workflows/ci.yml

@@ -175,7 +175,7 @@ jobs:
         # See https://cmake.org/cmake/help/latest/manual/ctest.1.html for more detail
         run: |
           ctest -C ${{matrix.build_type}}
-          gcovr -j ${{env.nproc}} --root ../ --print-summary --xml-pretty --xml coverage.xml --gcov-executable '${{ matrix.gcov_executable }}'
+          gcovr -j ${{env.nproc}} --root ../ --print-summary --xml-pretty --xml coverage.xml . --gcov-executable '${{ matrix.gcov_executable }}'
 
       - name: Windows - Test and coverage
         if: runner.os == 'Windows'