fix: remove unessessary executable bits

[donatj]

Doing a little security scan, I found that your README.md came up as marked executable but needn't be.

I did a quick find . -type f -exec test -x {} \; -print scan for everything in the repo that's executable but shouldn't be and chmod -x'd them.

If you have any questions or requests, I'm more than happy.

[github-actions[bot]]

:tada: This PR is included in version 1.0.6 :tada:

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot :package::rocket: