Bump @azure/msal-browser from 2.15.0 to 2.21.0 (#567)

* Bump @azure/msal-browser from 2.15.0 to 2.21.0

Bumps [@azure/msal-browser](https://github.com/AzureAD/microsoft-authentication-library-for-js) from 2.15.0 to 2.21.0.
- [Release notes](https://github.com/AzureAD/microsoft-authentication-library-for-js/releases)
- [Commits](AzureAD/microsoft-authentication-library-for-js@msal-browser-v2.15.0...msal-browser-v2.21.0)

---
updated-dependencies:
- dependency-name: "@azure/msal-browser"
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

* updating tests with correlation id

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Nikitha Chettiar <nikithauc@gmail.com>

Author: dependabot[bot]

package-lock.json

@@ -46,6 +46,7 @@ describe("AuthCodeMSALBrowserAuthenticationProvider.ts", () => {
 			fromCache: false,
 			expiresOn: new Date(),
 			tokenType: "",
+            correlationId: ""
 		};
 
 		const moq = sinon.mock(dummyApp);
@@ -88,6 +89,7 @@ describe("AuthCodeMSALBrowserAuthenticationProvider.ts", () => {
 			fromCache: false,
 			expiresOn: new Date(),
 			tokenType: "",
+            correlationId: ""
 		};
 
 		const moq = sinon.mock(dummyApp);