json encoder benchmark CI

Workflow runs for json encoder benchmark CI

• builtin: use system libgc for musl tcc

  completed successfully:
  json encoder benchmark CI#6:Commitf42fdc4pushedbyprogrammingkidx
  master

  May 29, 20265m 34s
  More actions for workflow run 6

• db.mysql: support multi-statement queries (fixes #18061, #18063) (#27…

  completed successfully:
  json encoder benchmark CI#5:Commit5ec8c10pushedbyprogrammingkidx
  master

  May 26, 20267m 1s
  More actions for workflow run 5

• term: remove extra spaces sent to methods in ok_message(), fail_messa…

  completed successfully:
  json encoder benchmark CI#4:Commit9e01248pushedbyprogrammingkidx
  master

  May 11, 202659s
  More actions for workflow run 4

• x.async: fix format for example in README (#27046)

  completed successfully:
  json encoder benchmark CI#3:Commit215cd9bpushedbyprogrammingkidx
  master

  May 1, 20267m 21s
  More actions for workflow run 3

• cgen: option param fix

  completed successfully:
  json encoder benchmark CI#2:Commit9189722pushedbyprogrammingkidx
  master

  Apr 23, 20264m 40s
  More actions for workflow run 2

• json2: add markused to encode_sumtype_time_variant

  failed:
  json encoder benchmark CI#1:Commit45e8bb2pushedbyprogrammingkidx
  master

  Apr 22, 20265m 43s
  More actions for workflow run 1