Bump martincostello/update-dotnet-sdk from 3.4.1 to 3.4.2 (#285)

Author: dependabot[bot]

.github/workflows/update-dotnet-sdk.yml

@@ -21,7 +21,7 @@ permissions:
 jobs:
   update-sdk:
     name: Update .NET SDK
-    uses: martincostello/update-dotnet-sdk/.github/workflows/update-dotnet-sdk.yml@758e92b362c4164925583874878423a794cce239 # v3.4.1
+    uses: martincostello/update-dotnet-sdk/.github/workflows/update-dotnet-sdk.yml@85d667fd1555930e26433702522ad27d93e2b71a # v3.4.2
     permissions:
       contents: write
       pull-requests: write