Relax permissions

[camdencheek]

Description of the changes

Relax required permissions from 0600 to 0640

PR Review Checklist

Author

• [x] the PR should focus on a single subject. Change only relevant files to the problem you’re working on Clean and format the code
• [x] add unit tests for your changes and make sure all unit tests are passing
• [x] add a risk label after carefully considering the "blast radius" of your changes
• [x] describe the intent of your changes in the description. don't just rewrite your code in prose
• [x] assign at least one reviewer
• [x] address the feedback

Reviewer

• [ ] review code for readability
• [ ] verify that high risk behavior changes are well tested
• [ ] check license for any new external dependency
• [ ] ask questions about anything that isn't clear and obvious
• [ ] approve the PR when you consider it's good to merge