(maint) Update actions/setup-dotnet action to v4

Author: renovate[bot]

.github/workflows/build.yml

@@ -47,7 +47,7 @@ jobs:
         uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
       - name: Fetch all tags and branches
         run: git fetch --prune --unshallow
-      - uses: actions/setup-dotnet@v3.2.0
+      - uses: actions/setup-dotnet@v4.0.0
         with:
           # codecov needs 2.1
           # unittests needs 3.1

.github/workflows/codeql-analysis.yml

@@ -34,7 +34,7 @@ jobs:
       with:
         fetch-depth: 0
 
-    - uses: actions/setup-dotnet@v3.2.0
+    - uses: actions/setup-dotnet@v4.0.0
       with:
         dotnet-version: |
           5.0