[gm.py] Add wasm-spec-tests and wasm-js as test targets

R=jkummerow@chromium.org

Notry: true
Bug: v8:9810
Change-Id: I3859508de250225b9d8ae322e107079f6dc0c88b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1903974
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64852}

tools/dev/gm.py

@@ -87,6 +87,8 @@ TESTSUITES_TARGETS = {"benchmarks": "d8",
               "test262": "d8",
               "unittests": "unittests",
               "wasm-api-tests": "wasm_api_tests",
+              "wasm-js": "d8",
+              "wasm-spec-tests": "d8",
               "webkit": "d8"}
 
 OUTDIR = "out"