BREAKING CHANGE: Drop Node.js 12

[styfle]

This PR contains:

• Update esbuild target to the new target
• Remove util missing methods.
• Remove uuid polyfill
• Remove http missing methods.
• Remove buffer <-> blob patch.
• Upgrade jest@28 to jest@29
• Remove node12 from docs
• Remove AbortSignal workaround for Jest.

Related

• Closes Drop node12 support #133

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Latest commit: 431fec9

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Name	Status	Preview	Updated
edge-runtime	✅ Ready (Inspect)	Visit Preview	Oct 27, 2022 at 2:19PM (UTC)

[Kikobeats]

hum, something related with jest integration is not working fine:

npx jest --detectOpenHandles
 PASS  test/index.test.ts
  ✓ TextEncoder references the same global Uint8Array constructor (2 ms)
  ✓ allows to run fetch (290 ms)
  ✓ allows to run crypto
  ✓ has EdgeRuntime global (1 ms)

Test Suites: 1 passed, 1 total
Tests:       4 passed, 4 total
Snapshots:   0 total
Time:        0.875 s, estimated 1 s
Ran all test suites.

Jest has detected the following 1 open handle potentially keeping Jest from exiting:

  ●  TCPWRAP

      at Client.connect (evalmachine.<anonymous>:9471:24)
      at socket (evalmachine.<anonymous>:10877:29)
      at connect (evalmachine.<anonymous>:10876:30)
      at _resume (evalmachine.<anonymous>:11035:11)
      at resume (evalmachine.<anonymous>:10961:7)
      at Client.[dispatch] (evalmachine.<anonymous>:10303:11)
      at Intercept (evalmachine.<anonymous>:10052:20)
      at Client.[Intercepted Dispatch] (evalmachine.<anonymous>:8927:16)
      at Client.dispatch (evalmachine.<anonymous>:8943:44)
      at Pool.[dispatch] (evalmachine.<anonymous>:9168:32)
      at Pool.[Intercepted Dispatch] (evalmachine.<anonymous>:8920:33)
      at Pool.dispatch (evalmachine.<anonymous>:8943:44)
      at Agent2.[dispatch] (evalmachine.<anonymous>:11580:27)
      at Intercept (evalmachine.<anonymous>:10052:20)
      at Agent2.[Intercepted Dispatch] (evalmachine.<anonymous>:8927:16)
      at Agent2.dispatch (evalmachine.<anonymous>:8943:44)
      at evalmachine.<anonymous>:8669:83
      at dispatch (evalmachine.<anonymous>:8669:16)
      at httpNetworkFetch (evalmachine.<anonymous>:8570:65)
      at httpNetworkOrCacheFetch (evalmachine.<anonymous>:8461:39)
      at httpFetch (evalmachine.<anonymous>:8301:43)
      at schemeFetch (evalmachine.<anonymous>:8234:24)
      at evalmachine.<anonymous>:8107:26
      at mainFetch (evalmachine.<anonymous>:8126:11)
      at fetching (evalmachine.<anonymous>:8080:7)
      at Agent2.fetch (evalmachine.<anonymous>:7945:20)
      at fetch (evalmachine.<anonymous>:11739:40)
      at Object.fetch (test/index.test.ts:10:26)