Bump com.azure:azure-json from 1.3.0 to 1.4.0

Bumps [com.azure:azure-json](https://github.com/Azure/azure-sdk-for-java) from 1.3.0 to 1.4.0.
- [Release notes](https://github.com/Azure/azure-sdk-for-java/releases)
- [Commits](Azure/azure-sdk-for-java@v1.3.0...azure-json_1.4.0)

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

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

Author: dependabot[bot]

agent/agent/build.gradle.kts

@@ -223,6 +223,6 @@ configurations {
     exclude("com.fasterxml.jackson.dataformat", "jackson-dataformat-xml")
     exclude("com.fasterxml.woodstox", "woodstox-core")
     // temporarily overriding version until latest azure-json is part of azure-core
-    resolutionStrategy.force("com.azure:azure-json:1.3.0")
+    resolutionStrategy.force("com.azure:azure-json:1.4.0")
   }
 }