feat: update gcovr to 6.0 (#65)

* ci: add conventional commit check for PR title

* ci: kebab-case all job names

* ci: run build & push for dependabot PRs

* ci: use latest cosign version bundled with action

* ci: split build-push into multiple workflows

* ci: provide correct path to test report

* ci: re-order 'on' worklfow stanzas

* ci: accept cosign public upload

* ci: don't run build-push on merge queue

* deps: update gcovr to 6.0

Author: rjaegers

.devcontainer/Dockerfile

@@ -27,7 +27,7 @@ RUN wget -qO /usr/local/share/ca-certificates/Cisco_Umbrella_Root_CA.crt https:/
 # Install some tools via pip to get more recent versions
 RUN python3 -m pip --no-cache-dir install \
   cmake==3.24.1 \
-  gcovr==5.2
+  gcovr==6.0
 
 # Set default generator for CMake to Ninja
 ENV CMAKE_GENERATOR="Ninja"