[cli-test] Added /usr/bin to PATH so that haskell can to verify pkg downloads (#2433)

## Summary
CICD jobs for
[`cli-test`](https://github.com/jetify-com/devbox/actions/workflows/cli-tests.yaml?query=branch%3Amain)
has been failing on Haskell example because the PATH (only) in test
environment for macos doesn't have access to `/usr/bin/security` so it
fails to verify TLS handshake on haskell package downloads.
This small change ensures haskell has access to security binary. 

Broader fix would be to add `/usr/bin` to
[`setupPATH`](https://github.com/jetify-com/devbox/blob/0fdfc6764a0a16fbbff504410053b13dee075e5f/testscripts/testrunner/setupenv.go#L39)
function that sets up test environments before being run in CICD. But
this PR keeps the scope to only the failing test.

related to commercialhaskell/stack#4558

## How was it tested?
tested in this CI job:
https://github.com/jetify-com/devbox/actions/runs/12147321911

Author: mohsenari

examples/development/haskell/devbox.json

@@ -7,6 +7,9 @@
     "zlib@latest",
     "hpack@latest"
   ],
+  "env": {
+    "PATH": "$PATH:/usr/bin"
+  },
   "shell": {
     "init_hook": null,
     "scripts": {
@@ -17,4 +20,4 @@
       ]
     }
   }
-}
+}