Update wasm-spec.

Rolling v8/test/wasm-js/data: https://chromium.googlesource.com/external/github.com/WebAssembly/spec/+log/a2b5691..2f5d8e7

Update index.bs (Sven Sauleau)
https://chromium.googlesource.com/external/github.com/WebAssembly/spec/+/2f5d8e7

Update index.bs (Sven Sauleau)
https://chromium.googlesource.com/external/github.com/WebAssembly/spec/+/0e1021a

Update index.bs (Sven Sauleau)
https://chromium.googlesource.com/external/github.com/WebAssembly/spec/+/b65f68d

Update index.bs (Sven Sauleau)
https://chromium.googlesource.com/external/github.com/WebAssembly/spec/+/2c9b327

Update index.bs (Sven Sauleau)
https://chromium.googlesource.com/external/github.com/WebAssembly/spec/+/5ad5fe2

Update index.bs (Sven Sauleau)
https://chromium.googlesource.com/external/github.com/WebAssembly/spec/+/b2fefbd

Update index.bs (Sven Sauleau)
https://chromium.googlesource.com/external/github.com/WebAssembly/spec/+/2478368

Normative: Read the imports synchronously in WebAssembly.instantiate(Module). (Ms2ger)
https://chromium.googlesource.com/external/github.com/WebAssembly/spec/+/16a91bd

...

TBR=ahaas@chromium.org,clemensh@chromium.org

Change-Id: I33cb12bc8c456517c809485e4d8aca1c19df0605
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1526725Reviewed-by: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#60270}

DEPS

@@ -122,7 +122,7 @@ deps = {
     'dep_type': 'cipd',
   },
   'v8/test/wasm-js/data':
-    Var('chromium_url') + '/external/github.com/WebAssembly/spec.git' + '@' + 'a2b5691cf102f3927e782fe5446f9b53dda6b39f',
+    Var('chromium_url') + '/external/github.com/WebAssembly/spec.git' + '@' + '2f5d8e761b67325c6dd3501b56b603199264572b',
 }
 
 recursedeps = [