refactor(toml): remove regexp bounaries

[timreichen]

Seems like all tests still pass without \b.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.70%. Comparing base (ab916fd) to head (6eaea50).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6682   +/-   ##
=======================================
  Coverage   94.69%   94.70%           
=======================================
  Files         562      563    +1     
  Lines       46651    46676   +25     
  Branches     6570     6573    +3     
=======================================
+ Hits        44177    44203   +26     
  Misses       2431     2431           
+ Partials       43       42    -1     

☔ 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.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[kt3k]

After this change parse("1 = truea = 1") parse to { "1": true, a: 1 } while it raises syntax error correctly on main. I think we need more test to check this

[timreichen]

After this change parse("1 = truea = 1") parse to { "1": true, a: 1 } while it raises syntax error correctly on main. I think we need more test to check this

#6663 (comment)