Prevent race condition when Windows tests reading same config file

[alanhamlett]

{"caller":"cmd/heartbeat/heartbeat.go:158","file":"testdata/main.go","func":"heartbeat.SendHeartbeats","is_write":true,"level":"error","lineno":13,"message":"failed to reset rate limit: failed to parse config file: failed creating file: open C:\\Users\\runneradmin\\.wakatime\\wakatime-internal.cfg: The system cannot find the path specified.","now":"2024-09-17T09:19:29Z","os/arch":"unset/unset","plugin":"plugin/0.0.1","time":1585598059.1,"version":"unset"}
--- FAIL: TestSendHeartbeats_RateLimited (1.69s)
    testing.go:1231: TempDir RemoveAll cleanup: remove C:\Users\RUNNER~1\AppData\Local\Temp\TestSendHeartbeats_RateLimited2560104576\001\wakatime-config621071612: The process cannot access the file because it is being used by another process.
{"caller":"cmd/heartbeat/heartbeat.go:158","file":"\\tmp\\main.go","func":"heartbeat.SendHeartbeats","is_write":true,"level":"error","lineno":13,"message":"failed to reset rate limit: failed to parse config file: failed creating file: open C:\\Users\\runneradmin\\.wakatime\\wakatime-internal.cfg: The system cannot find the path specified.","now":"2024-09-[17](https://github.com/wakatime/wakatime-cli/actions/runs/10900133075/job/30247075557#step:5:18)T09:19:31Z","os/arch":"unset/unset","plugin":"plugin","time":1585598059.1,"version":"unset"}
{"caller":"cmd/heartbeat/heartbeat.go:158","file":"testdata/main.go","func":"heartbeat.SendHeartbeats","is_write":true,"level":"error","lineno":2,"message":"failed to reset rate limit: failed to parse config file: failed creating file: open C:\\Users\\runneradmin\\.wakatime\\wakatime-internal.cfg: The system cannot find the path specified.","now":"2024-09-17T09:[19](https://github.com/wakatime/wakatime-cli/actions/runs/10900133075/job/30247075557#step:5:20):32Z","os/arch":"unset/unset","plugin":"plugin/0.0.1","time":1585598059.1,"version":"unset"}
{"caller":"cmd/heartbeat/heartbeat.go:158","file":"testdata/main.go","func":"heartbeat.SendHeartbeats","is_write":true,"level":"error","lineno":13,"message":"failed to reset rate limit: failed to parse config file: failed creating file: open C:\\Users\\runneradmin\\.wakatime\\wakatime-internal.cfg: The system cannot find the path specified.","now":"2024-09-17T09:19:32Z","os/arch":"unset/unset","plugin":"plugin/0.0.1","time":1585598059.1,"version":"unset"}

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 63.05%. Comparing base (e50949f) to head (dcf9a72).
Report is 2 commits behind head on develop.

@@           Coverage Diff            @@
##           develop    #1097   +/-   ##
========================================
  Coverage    63.05%   63.05%           
========================================
  Files          383      383           
  Lines        16530    16530           
========================================
  Hits         10423    10423           
  Misses        5539     5539           
  Partials       568      568           

Flag	Coverage Δ
unittests	63.05% <ø> (ø)

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