Bump dotnet/nbgv from 0.4 to 0.5

Bumps [dotnet/nbgv](https://github.com/dotnet/nbgv) from 0.4 to 0.5.
- [Release notes](https://github.com/dotnet/nbgv/releases)
- [Commits](dotnet/nbgv@v0.4...v0.5)

---
updated-dependencies:
- dependency-name: dotnet/nbgv
  dependency-version: '0.5'
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/publish-mcp.yml

@@ -28,7 +28,7 @@ jobs:
           cache: npm
           cache-dependency-path: mcp/package-lock.json
 
-      - uses: dotnet/nbgv@v0.4
+      - uses: dotnet/nbgv@v0.5
         id: nbgv
         with:
           path: mcp # version the mcp/ subtree (mcp/version.json)

.github/workflows/release.yml

@@ -19,7 +19,7 @@ jobs:
         with:
           global-json-file: global.json
 
-      - uses: dotnet/nbgv@v0.4
+      - uses: dotnet/nbgv@v0.5
         id: nbgv
 
       - name: restore signing key