chore: use unique tempdir prefixes in fuzzing temp dirs

[terriko]

• related: feat: tempfile cleanup for RParser #3944

We've been working on improving our discipline around temp directories in fuzzing and making sure they get cleaned up appropriately, but it occurred to me yesterday during code review that it might be useful to use a different prefix for the fuzzing than we do for regular cve-bin-tool actions, mostly to help developers make sure we're cleaning up temp files directly.

For #3944 I suggested using the prefix "cve-bin-tool-fuzz-renv-" (previously the prefix was "cve-bin-tool-"). We should probably change the others to match. This isn't urgent and should be pretty easy for a beginner to do, so I'm going to flag this as a beginner friendly bug.

What to do:

• look at the python files in the fuzz/ directory
• if they create a temp directory with the prefix "cve-bin-tool", change that prefix to be "cve-bin-tool-fuzz-FUZZERNAME" where FUZZERNAME should be replaced with something that identifies the fuzzer in question.

For those of you working on otherwise improving our fuzzers, feel free to make these changes alongside the temp cleanup stuff, but otherwise let's leave this open for a beginner to get their first commit with us.

[ashish111333]

Hi there,I would like to work on this.