Bump com.microsoft.azure:msal4j in /msal-obo-sample

Bumps [com.microsoft.azure:msal4j](https://github.com/AzureAD/microsoft-authentication-library-for-java) from 1.11.0 to 1.19.0.
- [Release notes](https://github.com/AzureAD/microsoft-authentication-library-for-java/releases)
- [Changelog](https://github.com/AzureAD/microsoft-authentication-library-for-java/blob/dev/changelog.txt)
- [Commits](https://github.com/AzureAD/microsoft-authentication-library-for-java/commits)

---
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>

Author: dependabot[bot]

msal-obo-sample/pom.xml

@@ -19,7 +19,7 @@
         <dependency>
             <groupId>com.microsoft.azure</groupId>
             <artifactId>msal4j</artifactId>
-            <version>1.11.0</version>
+            <version>1.19.0</version>
         </dependency>
         <dependency>
             <groupId>org.json</groupId>