test(e2e, emulator): execute emulator start directly, not via sh

using sh caused problems when executing on linux, though it worked on mac
the executable bit is set on the script though and I verified it works
when executed directly on both linux and mac

package.json

@@ -20,8 +20,8 @@
     "tests:packager:chrome": "cd tests && node_modules/.bin/react-native start --reset-cache",
     "tests:packager:jet": "cd tests && cross-env REACT_DEBUGGER=\"echo nope\" node_modules/.bin/react-native start --no-interactive",
     "tests:packager:jet-reset-cache": "cd tests && cross-env REACT_DEBUGGER=\"echo nope\" node_modules/.bin/react-native start --reset-cache --no-interactive",
-    "tests:emulator:start": "cd ./.github/workflows/scripts && sh ./start-firebase-emulator.sh --no-daemon",
-    "tests:emulator:start-ci": "cd ./.github/workflows/scripts && sh ./start-firebase-emulator.sh",
+    "tests:emulator:start": "cd ./.github/workflows/scripts && ./start-firebase-emulator.sh --no-daemon",
+    "tests:emulator:start-ci": "cd ./.github/workflows/scripts && ./start-firebase-emulator.sh",
     "tests:android:build": "cd tests && ./node_modules/.bin/detox build --configuration android.emu.debug",
     "tests:android:build-release": "cd tests && ./node_modules/.bin/detox build --configuration android.emu.release",
     "tests:android:test": "cd tests && ./node_modules/.bin/detox test --configuration android.emu.debug",