Allow both v1 and v2 of elm-solve-deps-wasm

This is commit switches to the same version constraint of
elm-solve-deps-wasm as elm-review uses these days. (Since 2.13.0, via
jfmengels/node-elm-review#195.)

The benefit of this
commit is that if you install the latest version of both elm-test and
elm-review, you only get one copy of elm-solve-deps-wasm in
node_modules/ instead of two, saving about 288 KB.

Closes #636. This commit does the same thing as that PR, but without
updating the package-lock.json version. That will be done some other
time.

package.json

@@ -47,7 +47,7 @@
     "chokidar": "^3.5.3",
     "commander": "^9.4.1",
     "cross-spawn": "^7.0.6",
-    "elm-solve-deps-wasm": "^1.0.2",
+    "elm-solve-deps-wasm": "^1.0.2 || ^2.0.0",
     "glob": "^8.0.3",
     "graceful-fs": "^4.2.10",
     "split": "^1.0.1",