fix: close tmp file

[testwill]

Solved issues and/or description of the change

Closing the file before removing it will prevent problems, e.g. see:
https://stackoverflow.com/questions/63519526/should-i-close-os-file-before-calling-os-removeall

Manual test

none

Checklist

• The PR's target branch is 'hybridgroup:dev'
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes (e.g. by run make test_race)
• No linter errors exist locally (e.g. by run make fmt_check)
• I have performed a self-review of my own code

[gen2thomas]

Suggested change

	defer tmpFile.Close()
	defer func() {
	tmpFile.Close()
	os.Remove(tmpFile.Name())
	}()

and remove line 153 (I'm not able to mark both lines for the suggestion)

[gen2thomas]

Hi @testwill , thanks for finding and fix. Please change the target branch to "dev" according our PR policy and fill the checklist.