Bump @microsoft/mgt-proxy-provider from 2.4.0 to 2.5.2

Bumps [@microsoft/mgt-proxy-provider](https://github.com/microsoftgraph/microsoft-graph-toolkit) from 2.4.0 to 2.5.2.
- [Release notes](https://github.com/microsoftgraph/microsoft-graph-toolkit/releases)
- [Commits](microsoftgraph/microsoft-graph-toolkit@v2.4.0...v2.5.2)

---
updated-dependencies:
- dependency-name: "@microsoft/mgt-proxy-provider"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

package.json

@@ -30,6 +30,6 @@
   "dependencies": {
     "@microsoft/mgt-components": "^2.4.0",
     "@microsoft/mgt-element": "^2.4.0",
-    "@microsoft/mgt-proxy-provider": "^2.4.0"
+    "@microsoft/mgt-proxy-provider": "^2.5.2"
   }
 }