Update actions/setup-dotnet action to v4.3.0

Author: renovate[bot]

.github/workflows/build.yml

@@ -50,7 +50,7 @@ jobs:
         run: git fetch --prune --unshallow
 
       # codecov and unittests need 2.1, gitversion needs 5.0
-      - uses: actions/setup-dotnet@87b7050bc53ea08284295505d98d2aa94301e852 # v4.2.0
+      - uses: actions/setup-dotnet@3951f0dfe7a07e2313ec93c75700083e2005cbab # v4.3.0
         with:
           dotnet-version: |
             2.1

.github/workflows/codeql-analysis.yml

@@ -24,7 +24,7 @@ jobs:
       with:
         fetch-depth: 0
 
-    - uses: actions/setup-dotnet@87b7050bc53ea08284295505d98d2aa94301e852 # v4.2.0
+    - uses: actions/setup-dotnet@3951f0dfe7a07e2313ec93c75700083e2005cbab # v4.3.0
       with:
         dotnet-version: |
           2.1