chore: upgrade puppeteer, only download chrome in browser test action, turn on yarn cache

[szuperaz]

Attempting to fix never-ending CI actions:

• I'm fairly certain the root cause is Yarn@1 issue of postinstall scripts can hang forever - I'm not sure why this only started recently, but this PR should solve this issue by (maybe installing esbuild, which also has a postinstall, triggered the bug?):
  • Apart from browser test chrome is not installed -> this will make all actions faster
  • In browser chrome is installed in a separate step, not in postinstall
• Unrelated but
  • Upgraded puppeteer
  • Updated setup-node and checkout actions to use node 24
  • Enabled yarn cache (should be more complete than the previous solution of caching node_modules only)
  • Restore running unit tests on node 16
  • Saved package manager version to package.json

[github-actions]

Size Change: 0 B

Total Size: 109 kB

ℹ️ View Unchanged

Filename	Size
dist/js_min/getstream.js	35.5 kB
dist/js/getstream.js	73.9 kB

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