chore: use engine-release for regex sdk-tests whilst we wait fore firefox 108 to be released

the current version of spidermonkey has a low value set for `wasiRecursionDepthLimit`, which is reached when we run in debug mode on the regex application.

Firefox 108 has increased the value of `wasiRecursionDepthLimit` (https://bugzilla.mozilla.org/show_bug.cgi?id=1803438) and the new value would mean we can use debug builds on the regex application. The releas is planned for jan 17th — https://developer.mozilla.org/en-US/docs/Mozilla/Firefox/Releases/109

Author: Jake Champion

.github/workflows/main.yml

@@ -218,7 +218,7 @@ jobs:
     - name: Download Engine
       uses: actions/download-artifact@v3
       with:
-        name: engine-debug
+        name: ${{ matrix.fixture == 'regex' && 'engine-release' || 'engine-debug'  }}
     - run: yarn
 
     - name: js-compute Integration Tests Job