Fix: Increase Entropy Requirement for Secret Redaction to Reduce False Positives

[tofarr]

End-user friendly description of the problem this fixes or functionality that this introduces

If a value has less than 8 characters, it will not be considered a secret as it does not have enough entropy

• Include this change in the Release Notes. If checked, you must provide an end-user friendly description for your change below

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Give a summary of what the PR does, explaining any non-trivial design decisions
The new logging filters can sometimes lead to unusual outcomes - we look at the environment for any variable with a name containing the terms KEY, CODE, SECRET or TOKEN and replace those values with ****** in the logs - it seems in my env my AWS_ACCESS_KEY_ID was set to default, so any time the word default appeared in the logs it was redacted! By increasing the entropy requirement we remove false positives.

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Link of any specific issues this addresses

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To run this PR locally, use the following command:

docker run -it --rm   -p 3000:3000   -v /var/run/docker.sock:/var/run/docker.sock   --add-host host.docker.internal:host-gateway   -e SANDBOX_RUNTIME_CONTAINER_IMAGE=docker.all-hands.dev/all-hands-ai/runtime:4981063-nikolaik   --name openhands-app-4981063   docker.all-hands.dev/all-hands-ai/openhands:4981063

[rbren]

this seems dangerous. I could see an 8 char secret, many passwords are 8 chars

[tofarr]

That's why I picked >= 8.