fix(ci): cap plugin-tests step at 35m and disable pytest-xprocess

Run 25234887145 hung the Plugin Tests job at the full 60m job timeout.
The python tests in plugin-groq (and other plugins) finished cleanly,
but a leftover process kept turbo's stdio pipes open so the job never
exited.

Several plugins declare `pytest-xprocess` as a dev dep but none of them
actually use it; its `pytest_terminal_summary` hook is the most likely
source of the leaked child. Disable the plugin globally via
PYTEST_ADDOPTS, mirroring the per-plugin removal in b33bd39.

Also add a 35m step-level timeout so any future hang fails the step
fast instead of burning the full 60m job budget.

Author: Shaw

.github/workflows/test.yml

@@ -107,6 +107,11 @@ jobs:
       TURBO_TOKEN: ${{ secrets.TURBO_TOKEN }}
       TURBO_TEAM: ${{ vars.TURBO_TEAM }}
       TURBO_REMOTE_ONLY: true
+      # Disable pytest-xprocess globally. Several plugins declare it as a dev
+      # dep but never use it; its session-finalizer leaves orphan child
+      # processes that hold turbo's stdio pipes open after the test passes,
+      # so the job hangs until the 60m wall-clock timeout fires.
+      PYTEST_ADDOPTS: "-p no:xprocess"
     steps:
       - uses: actions/checkout@v6
         with:
@@ -127,6 +132,7 @@ jobs:
           no-vision-deps: "true"
 
       - name: Run plugin tests
+        timeout-minutes: 35
         run: bun run test:plugins
 
   desktop-contract: