Update action version.

Author: Evagan2018

.github/workflows/CubeMX-CI.yml

@@ -20,7 +20,7 @@ jobs:
 
     steps:
       - name: Checkout repo
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Install tools
         uses: ARM-software/cmsis-actions/vcpkg@v1