Update the JSON schemas

The command executed was as follows:
rm -f .api.deps .cli.deps && FETCH_APIS=1 make update-json -j8

etc/api/testing/v1/testing-api.json

@@ -16,7 +16,8 @@
     "batchPath": "batch",
     "description": "Allows developers to run automated tests for their mobile applications on Google infrastructure.",
     "discoveryVersion": "v1",
-    "documentationLink": "https://developers.google.com/cloud-test-lab/",
+    "documentationLink": "https://firebase.google.com/docs/test-lab/",
+    "fullyEncodeReservedExpansion": true,
     "icons": {
         "x16": "http://www.google.com/images/icons/product/search-16.gif",
         "x32": "http://www.google.com/images/icons/product/search-32.gif"
@@ -448,7 +449,7 @@
             }
         }
     },
-    "revision": "20240227",
+    "revision": "20240416",
     "rootUrl": "https://testing.googleapis.com/",
     "schemas": {
         "Account": {
@@ -1227,7 +1228,7 @@
                     "type": "array"
                 },
                 "ttl": {
-                    "description": "Optional. The amount of time that a device will be initially allocated for. This can eventually be extended with the UpdateDeviceSession RPC. Default: 30 minutes.",
+                    "description": "Optional. The amount of time that a device will be initially allocated for. This can eventually be extended with the UpdateDeviceSession RPC. Default: 15 minutes.",
                     "format": "google-duration",
                     "type": "string"
                 }