Disable ccov: lcov is broken

Author: rhaschke

.github/workflows/ci.yaml

@@ -19,9 +19,9 @@ jobs:
       fail-fast: false
       matrix:
         env:
-          - IMAGE: rolling-source
-            NAME: ccov
-            TARGET_CMAKE_ARGS: -DCMAKE_BUILD_TYPE=Debug -DCMAKE_CXX_FLAGS="--coverage"
+          # - IMAGE: rolling-source
+          #   NAME: ccov
+          #   TARGET_CMAKE_ARGS: -DCMAKE_BUILD_TYPE=Debug -DCMAKE_CXX_FLAGS="--coverage"
           - IMAGE: rolling-source
             CLANG_TIDY: pedantic
           - IMAGE: jazzy-source