feat: move to ssr

[aldy505]

• Upgrade to Astro v4
• Use SSR instead of SSG (fixes more bug than ever)
• Use Sentry for monitoring stuff
• Use Node runtime, because Sentry integration can only work there.
• Bump CI stuff (majority of it is just bumping dependencies that uses Node 16 to use Node 20)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.37%. Comparing base (dbbfb12) to head (7048661).

Additional details and impacted files

@@           Coverage Diff           @@
##           master      #52   +/-   ##
=======================================
  Coverage   96.37%   96.37%           
=======================================
  Files           1        1           
  Lines         414      414           
  Branches       53       53           
=======================================
  Hits          399      399           
  Misses         15       15           

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[aldy505]

ping @elianiva