Bump com.microsoft.azure:msal4j from 1.17.3 to 1.18.0 in /apps/backend

Bumps [com.microsoft.azure:msal4j](https://github.com/AzureAD/microsoft-authentication-library-for-java) from 1.17.3 to 1.18.0.
- [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](AzureAD/microsoft-authentication-library-for-java@v1.17.3...v1.18.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

apps/backend/pom.xml

@@ -26,7 +26,7 @@
         <graphql.version>22.0</graphql.version>
         <flexmark.version>0.64.8</flexmark.version>
         <microsoft-graph.version>6.20.0</microsoft-graph.version>
-        <msal4j.version>1.17.3</msal4j.version>
+        <msal4j.version>1.18.0</msal4j.version>
         <flyway-database-postgresql.version>10.16.0</flyway-database-postgresql.version>
 
         <!-- transitive versions -->