GHA: CI housekeeping #559

Job	Run time
opam_dune_build (ubuntu-22.04, 4.12.x)	6m 34s
opam_dune_build (macos-14, 4.14.x)	5m 52s
docs	4m 42s
bytecode_build (ubuntu-22.04, 4.14.x)	4m 34s
build_compat (4.14.x, true, -ubuntu-x86_64)	9m 7s
build (macos-14, 5.2.0)	7m 23s
build_compat (ocaml-variants.4.14.2+options,ocaml-option-musl,ocaml-option-static,ocaml-option-fl...	7m 4s
build (macos-14, 4.14.2, true, -macos-arm64)	5m 51s
build_compat (4.12.x)	8m 23s
build (macos-12, 4.14.2, true, -macos-x86_64)	13m 43s
build_compat (4.08.x)	9m 56s
build (ubuntu-22.04, 5.2.0)	7m 2s
build (ubuntu-22.04, 4.14.2)	3m 37s
build (ubuntu-20.04, 4.14.2)	3m 28s
build (windows-2022, 4.14.0+mingw64c, true, -windows-x86_64)	8m 52s
build (windows-2019, 4.14.0+mingw32c, true, -windows-i386)	8m 17s
rpc_abicheck (ubuntu-22.04, 5.2.x, v2.53.5)	5m 15s
rpc_abicheck (ubuntu-22.04, 4.14.x, v2.53.5)	1m 55s
rpc_abicheck (ubuntu-22.04, 4.14.x, v2.52.1, true)	2m 12s
rpc_abicheck (ubuntu-22.04, 4.14.x, v2.51.5, true)	2m 4s
rpc_abicheck (ubuntu-22.04, 4.08.x, v2.51.5, true)	5m 1s
rpc_abicheck (ubuntu-22.04, 4.08.x, v2.51.2, true)	4m 56s
rpc_abicheck (windows-2019, ocaml-variants.4.14.0+mingw64c, v2.53.5)	3m 55s
rpc_abicheck (windows-2019, ocaml-variants.4.14.0+mingw64c, v2.52.1, true)	4m 1s
rpc_abicheck (windows-2019, ocaml-variants.4.08.1+mingw32c, v2.51.5, true)	4m 47s
rpc_abicheck (macos-12, 4.14.x, v2.53.5)	4m 24s
rpc_abicheck (macos-12, 4.14.x, v2.52.1, true)	4m 28s
rpc_abicheck (macos-12, 4.08.x, v2.51.2, true)	8m 56s
	2h 46m 19s

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