Revert to relative file path for foundry-playwright dependency

Use file:../../foundry-playwright/crowdstrike-foundry-playwright-0.5.0.tgz
since the package is not yet published to npm. Will switch to a version
specifier once @crowdstrike/foundry-playwright is available on npmjs.org.

Author: mraible

e2e/package.json

@@ -15,7 +15,7 @@
     "node": ">=22.0.0"
   },
   "dependencies": {
-    "@crowdstrike/foundry-playwright": "latest"
+    "@crowdstrike/foundry-playwright": "file:../../foundry-playwright/crowdstrike-foundry-playwright-0.5.0.tgz"
   },
   "devDependencies": {
     "@types/node": "latest"