Bump com.azure:azure-cosmos from 4.63.3 to 4.68.0 in /modules/azure

Bumps [com.azure:azure-cosmos](https://github.com/Azure/azure-sdk-for-java) from 4.63.3 to 4.68.0.
- [Release notes](https://github.com/Azure/azure-sdk-for-java/releases)
- [Commits](Azure/azure-sdk-for-java@azure-cosmos_4.63.3...azure-cosmos_4.68.0)

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

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

Author: dependabot[bot]

modules/azure/build.gradle

@@ -7,7 +7,7 @@ dependencies {
     shaded 'com.squareup.okhttp3:okhttp:4.12.0'
 
     testImplementation 'org.assertj:assertj-core:3.26.3'
-    testImplementation 'com.azure:azure-cosmos:4.63.3'
+    testImplementation 'com.azure:azure-cosmos:4.68.0'
     testImplementation 'com.azure:azure-storage-blob:12.29.0'
     testImplementation 'com.azure:azure-storage-queue:12.24.0'
     testImplementation 'com.azure:azure-data-tables:12.5.0'