chore: add SKIP_SMOKE and CNA_SKIP_GIT to turbo globalEnv

Allows the smoke test (which requires network access) to be skipped
in offline/CI environments by setting SKIP_SMOKE=1 or CNA_SKIP_GIT=1.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: ulises-jeremias

turbo.json

@@ -1,6 +1,11 @@
 {
   "$schema": "https://turborepo.org/schema.json",
-  "globalEnv": ["HTTPS_PROXY", "npm_config_user_agent"],
+  "globalEnv": [
+    "HTTPS_PROXY",
+    "npm_config_user_agent",
+    "SKIP_SMOKE",
+    "CNA_SKIP_GIT"
+  ],
   "globalDependencies": ["**/.env.*local"],
   "tasks": {
     "build": {