chore: bump msal4j from 1.11.2 to 1.13.8 in /examples/msal-java

Bumps [msal4j](https://github.com/AzureAD/microsoft-authentication-library-for-java) from 1.11.2 to 1.13.8.
- [Release notes](https://github.com/AzureAD/microsoft-authentication-library-for-java/releases)
- [Commits](AzureAD/microsoft-authentication-library-for-java@v1.11.2...v1.13.8)

---
updated-dependencies:
- dependency-name: com.microsoft.azure:msal4j
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

examples/msal-java/pom.xml

@@ -36,7 +36,7 @@
     <dependency>
       <groupId>com.microsoft.azure</groupId>
       <artifactId>msal4j</artifactId>
-      <version>1.11.2</version>
+      <version>1.13.8</version>
     </dependency>
     <!-- in a real application, you would use a proper logging implementation such as log4j2 or logback -->
     <dependency>