ci: rename mingw and msvc jobs to match linux and macOS

Author: EmmanuelP

.github/workflows/aravis-mingw.yml

@@ -11,7 +11,7 @@ on:
   workflow_dispatch:
 
 jobs:
-  test-mingw:
+  mingw:
     runs-on: windows-latest
     strategy:
       fail-fast: false # see all failures, not just the first one

.github/workflows/aravis-msvc.yml

@@ -8,7 +8,7 @@ on:
   workflow_dispatch:
 
 jobs:
-  test-msvc:
+  msvc:
     runs-on: windows-latest
     strategy:
       fail-fast: false