Add csp for recaptcha

[cw75]

⚠️   Pre Checklist

Please complete ALL items in this checklist, and remove before submitting

• I have npm run build and npm run serve locally before submitting this PR
• I have read through the Contributing Documentation

Summary

This PR attempts to fix the CSP issue that prevents recaptcha from loading.

Does this close any open issues?

Closes xx

Screenshots

Include any relevant screenshots here.

Other Information

Any other information that is important to this PR.

[klesh]

Thanks for the contribution.
I think I might need some context to understand the fix, would you like to fill me in?
I don't see any recaptcha when browsing the website, so, what did you run into and why this can fix your problem?

[cw75]

Hi @klesh , thanks for merging. Is the website re-deployed with this change already?

[klesh]

Hi, @cw75 , I believe so https://github.com/apache/incubator-devlake-website/actions/runs/9513869931 the CI went through, but I don't know how to verify your patch.

[cw75]

@klesh yeah since the issue cannot be reproduced locally from our end, it's been hard to debug. I made another patch to try to fix it. Could you merge that as well and see if it fixes the issue? If not, I will remove the widget for now. Thanks!

[klesh]

Sure, waiting for the CI to pass.