chore(cli e2e): keep fixtures on typescript 5.5.4

The fixtures are standalone user-project simulations with their own
committed npm/pnpm/yarn lockfiles (all pinning 5.5.4). Bumping them to
6.0.3 without regenerating three lockfiles each broke the frozen/ci
installs; revert to 5.5.4 to match the lockfiles.

Author: carderne

packages/cli-v3/e2e/fixtures/emit-decorator-metadata/package.json

@@ -16,6 +16,6 @@
   "devDependencies": {
     "@trigger.dev/build": "0.0.0-prerelease-20250321122618",
     "@types/node": "^24.13.3",
-    "typescript": "6.0.3"
+    "typescript": "5.5.4"
   }
 }

packages/cli-v3/e2e/fixtures/esm-only-external/package.json

@@ -15,6 +15,6 @@
     "mupdf": "^0.3.0"
   },
   "devDependencies": {
-    "typescript": "6.0.3"
+    "typescript": "5.5.4"
   }
 }

packages/cli-v3/e2e/fixtures/hello-world/package.json

@@ -13,6 +13,6 @@
     "@trigger.dev/sdk": "0.0.0-prerelease-20250321122618"
   },
   "devDependencies": {
-    "typescript": "6.0.3"
+    "typescript": "5.5.4"
   }
 }

packages/cli-v3/e2e/fixtures/monorepo-react-email/packages/trigger/package.json

@@ -6,6 +6,6 @@
     "@trigger.dev/sdk": "0.0.0-prerelease-20250321122618"
   },
   "devDependencies": {
-    "typescript": "6.0.3"
+    "typescript": "5.5.4"
   }
 }

packages/cli-v3/e2e/fixtures/otel-telemetry-loader/package.json

@@ -15,6 +15,6 @@
   },
   "devDependencies": {
     "@traceloop/instrumentation-openai": "^0.10.0",
-    "typescript": "6.0.3"
+    "typescript": "5.5.4"
   }
 }