start moving to `manylinux_2_28` #441

Job	Run time
build source	12s
build native (aarch64-linux-gnu, aarch64-linux)	1m 36s
build native (aarch64-linux-musl)	18m 44s
build native (arm-linux-gnu, arm-linux)	11m 28s
build native (arm-linux-musl)	18m 36s
build native (arm64-darwin)	18m 36s
build native (jruby)	2m 42s
build native (x64-mingw-ucrt, true)	11m 20s
build native (x64-mingw32, true)	12m 21s
build native (x86-mingw32)	13m 51s
build native (x86_64-darwin)	18m 36s
build native (x86_64-linux-gnu, x86_64-linux)	10m 47s
build native (x86_64-linux-musl)	18m 37s
source gem (ubuntu-latest, 3.3)	10s
source gem (ubuntu-latest, 3.2)	10s
source gem (ubuntu-latest, 3.1)	9s
source gem (ubuntu-latest, 3.0)	8s
source gem (ubuntu-latest, 2.7)	21s
source gem (ubuntu-latest, 2.6)	25s
source gem (ubuntu-latest, 2.5)	21s
source gem (ubuntu-latest, 2.4)	19s
${{ matrix.platform }} ${{ matrix.ruby }}	1s
static ${{ matrix.platform }} ${{ matrix.ruby }}	1s
${{ matrix.platform }} ${{ matrix.ruby }}	1s
${{ matrix.platform }} on ${{ matrix.from_image }}	1s
${{ matrix.platform }} setup-ruby(${{ matrix.ruby }})	1s
	2h 39m 34s

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