Bump FDC local toolkit to v1.8.4. (#8290)

* Bump FDC local toolkit to v1.8.4.

* Update changelog.

Author: rosalyntan

CHANGELOG.md

@@ -1,2 +1,8 @@
 - Fixed issue where `apps:init` fails to detect the output directory when it was run in a directory where `app` was the only module.
 - Set `LOG_EXECUTION_ID=true` by default for Cloud Functions (2nd gen) to improve debugging by displaying execution IDs in logs. (#8276)
+- Updated the Firebase Data Connect local toolkit to v1.8.4 which includes the following changes: (#8290)
+  - React hooks for mutations without args no longer require `undefined` to be passed when calling `mutate`.
+  - Fixed import resolution when `moduleResolution` is set to `bundler`.
+  - React code generation will now generate a README explaining how to use generated query and mutation hook functions.
+  - Fixed an issue where React developers have to pass in an empty object even when all fields are optional.
+  - Fixed an issue where `FirebaseError` wasn't being passed into `UseMutationOptions`.

src/emulator/downloadableEmulators.ts

@@ -59,20 +59,20 @@ const EMULATOR_UPDATE_DETAILS: { [s in DownloadableEmulators]: EmulatorUpdateDet
   dataconnect:
     process.platform === "darwin" // macos
       ? {
-          version: "1.8.3",
-          expectedSize: 25535232,
-          expectedChecksum: "53fb0bf52f21a84b1d6afa70371dd00c",
+          version: "1.8.4",
+          expectedSize: 25588480,
+          expectedChecksum: "421f6226a0433b824642c03eb0b6862d",
         }
       : process.platform === "win32" // windows
         ? {
-            version: "1.8.3",
-            expectedSize: 25965568,
-            expectedChecksum: "d717235f244e5bbbc00158eae3aa97f0",
+            version: "1.8.4",
+            expectedSize: 26020352,
+            expectedChecksum: "b78c95a7f071f127acda3a76cdcc8c48",
           }
         : {
-            version: "1.8.3", // linux
-            expectedSize: 25448600,
-            expectedChecksum: "cd381e329a27ff0c81c41d7e635d6733",
+            version: "1.8.4", // linux
+            expectedSize: 25501848,
+            expectedChecksum: "0aabd622b1a99b2a0d9c9dec4c7404fc",
           },
 };