Bump actions/setup-dotnet from 3 to 4 (#1040)

Bumps [actions/setup-dotnet](https://github.com/actions/setup-dotnet) from 3 to 4.
- [Release notes](https://github.com/actions/setup-dotnet/releases)
- [Commits](actions/setup-dotnet@v3...v4)

---
updated-dependencies:
- dependency-name: actions/setup-dotnet
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/vcpkg_ci_mac.yml

@@ -69,7 +69,7 @@ jobs:
           fi
           echo "EOF" >> "$GITHUB_ENV"
 
-      - uses: actions/setup-dotnet@v3
+      - uses: actions/setup-dotnet@v4
         with:
           dotnet-version: '3.1.x' # SDK Version to use.
           # Sets as "Source"

.github/workflows/vcpkg_ci_windows.yml

@@ -63,7 +63,7 @@ jobs:
         with:
           submodules: recursive
 
-      - uses: actions/setup-dotnet@v3
+      - uses: actions/setup-dotnet@v4
         with:
           dotnet-version: '3.1.x' # SDK Version to use.
           # Sets as "Source"