ci: use toJson in inputs that can be strings or arrays

Author: rjaegers

.github/workflows/wc-build-push.yml

@@ -57,7 +57,7 @@ jobs:
       runner-labels: ${{ inputs.runner-labels }}
 
   build-push:
-    name: Build (${{ matrix.runner }})
+    name: Build (${{ toJson(matrix.runner) }})
     strategy:
       matrix:
         runner: ${{ fromJson(inputs.build-test-runner-labels) }}

.github/workflows/wc-integration-test.yml

@@ -34,7 +34,7 @@ permissions: {}
 
 jobs:
   run-test:
-    name: 🧪 Integration Test (${{ matrix.runner }})
+    name: Integration Test (${{ toJson(matrix.runner) }})
     strategy:
       matrix:
         runner: ${{ fromJson(inputs.build-test-runner-labels) }}