tools: decrease timeout in test.py

This fixes the following crash on Windows for me. I don't know
why this I only started to see this now, but anyway, the new timeout
value is still longer than a week and a half.

    File "tools/test.py", line 1725, in <module>
        sys.exit(Main())
    File "tools/test.py", line 1701, in Main
        if RunTestCases(cases_to_run, options.progress, \
          options.j, options.flaky_tests):
    File "tools/test.py", line 923, in RunTestCases
        return progress.Run(tasks)
    File "tools/test.py", line 145, in Run
        thread.join(timeout=10000000)
    File "C:\Users\anna\AppData\Local\Programs\Python\Python38-32\ \
      lib\threading.py", line 1015, in join
        self._wait_for_tstate_lock(timeout=max(timeout, 0))
    File "C:\Users\anna\AppData\Local\Programs\Python\Python38-32\ \
      lib\threading.py", line 1027, in _wait_for_tstate_lock
        elif lock.acquire(block, timeout):
    OverflowError: timeout value is too large

PR-URL: #32868
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Zeyu Yang <himself65@outlook.com>

Reviewed-By: Bartosz Sosnowski <bartosz@janeasystems.com>

Author: addaleax

tools/test.py

@@ -142,7 +142,7 @@ def Run(self, tasks):
       # Wait for the remaining threads
       for thread in threads:
         # Use a timeout so that signals (ctrl-c) will be processed.
-        thread.join(timeout=10000000)
+        thread.join(timeout=1000000)
     except (KeyboardInterrupt, SystemExit):
       self.shutdown_event.set()
     except Exception: