chore: change logos for light and dark modes in navbar and footer

[jaygiang]

Use new logo for the navbar and footer.

Related Issue or Design Document

Issue #2496

Screenshots

• navbar light mode
  

• navbar dark mode
  

• footer no hover
  

• footer hover
  

Checklist

• I have read the contributing guidelines and signed the CLA.
• I have referenced an issue containing the design document if my change introduces a new feature.
• I have read the security policy.
• I confirm that this pull request does not address a security vulnerability.
  If this pull request addresses a security vulnerability,
  I confirm that I got approval (please contact security@ory.com) from the maintainers to push the changes.
• I have added tests that prove my fix is effective or that my feature works.
• I have added the necessary documentation within the code base (if appropriate).

Further comments

[jonas-jonas]

Looking great!