Update README.md - Supported Laravel Releases

[bobclewell]

Changes

Bringing the Support info up to the README.md, since the info there was not up to date.

Contributor Checklist

• I have read the Auth0 general contribution guidelines
• I have read the Auth0 code of conduct

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.92%. Comparing base (09cc9ac) to head (32d42f3).
⚠️ Report is 14 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##               main     #494   +/-   ##
=========================================
  Coverage     99.92%   99.92%           
- Complexity      538      539    +1     
=========================================
  Files            31       31           
  Lines          1340     1347    +7     
=========================================
+ Hits           1339     1346    +7     
  Misses            1        1           

Flag	Coverage Δ
unittestsvalidate	99.92% <ø> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.