Concurrency fixes (#350)

Currently its not possible to run the CI for different tracks
concurrently.

.github/workflows/tests.yml

@@ -34,7 +34,7 @@ permissions:
   contents: read
 
 concurrency:
-  group: ${{ github.workflow }}-${{ github.ref }}-${{ github.event_name }}
+  group: ${{ github.workflow }}-${{ github.ref }}-${{ github.event_name }}-${{ inputs.ubuntu-releases }}-${{ inputs.snap-tracks }}
   # XXX: scheduled runs should not cancel manually triggered ones
   cancel-in-progress: ${{ !contains(github.event_name, 'schedule')}}
 
@@ -161,7 +161,7 @@ jobs:
             track: "5.0/edge"
           - test: vm-migration
             track: "5.0/edge"
-          # skip track/os combinaisons that are too far appart
+          # skip track/os combinations that are too far appart
           - track: "4.0/edge"
             os: 24.04
           - track: "5.0/edge"