CI: Work around a vcpkg issue by checking out an earlier commit

Author: Exzap

.github/workflows/build.yml

@@ -28,7 +28,7 @@ jobs:
       run: |
         cd dependencies/vcpkg
         git fetch --unshallow
-        git pull --all
+        git checkout 431eb6bda0950874c8d4ed929cc66e15d8aae46f
 
     - name: Setup release mode parameters (for deploy)
       if: ${{ inputs.deploymode == 'release' }}
@@ -133,7 +133,7 @@ jobs:
       run: |
         cd dependencies/vcpkg
         git fetch --unshallow
-        git pull --all        
+        git checkout 431eb6bda0950874c8d4ed929cc66e15d8aae46f     
         
     - name: Setup release mode parameters (for deploy)
       if: ${{ inputs.deploymode == 'release' }}