chore(deps): update actions/setup-dotnet action to v4

Author: renovate[bot]

.github/workflows/ci.yml

@@ -128,7 +128,7 @@ jobs:
       ### Shared setup
 
       - name: Setup dotnet
-        uses: actions/setup-dotnet@3447fd6a9f9e57506b15f895c5b76d3b197dc7c2 # v3
+        uses: actions/setup-dotnet@3951f0dfe7a07e2313ec93c75700083e2005cbab # v4
         with:
           dotnet-version: '6.0.x'
       - uses: actions/cache@e12d46a63a90f2fae62d114769bbf2a179198b5c # v3