Addressing review comments

Author: kumar-shivam-ranjan

ads/aqua/extension/common_handler.py

@@ -57,15 +57,17 @@ def get(self):
         current_aqua_version = json.loads(read_file(current_aqua_version_path))
         current_ads_version = {"ads": metadata.version("oracle_ads")}
         current_version = {"installed": {**current_aqua_version, **current_ads_version}}
-
-        latest_version_artifact_path = ObjectStorageDetails(
-            CONDA_BUCKET_NAME, CONDA_BUCKET_NS, "service_pack/aqua_latest_version.json"
-        ).path
-
-        latest_version = json.loads(
-            read_file(latest_version_artifact_path, auth=default_signer())
-        )
-
+        try:
+            latest_version_artifact_path = ObjectStorageDetails(
+                CONDA_BUCKET_NAME,
+                CONDA_BUCKET_NS,
+                "service_pack/aqua_latest_version.json",
+            ).path
+            latest_version = json.loads(
+                read_file(latest_version_artifact_path, auth=default_signer())
+            )
+        except Exception:
+            latest_version = {"latest": current_version["installed"]}
         response = {**current_version, **latest_version}
         return self.finish(response)