Bump alpine from 3.20.3 to 3.21.0 #1969

Job	Run time
build_bin	1m 21s
count	4m 25s
testunit (ubuntu-24.04, 1.21, .)	1m 5s
testunit (ubuntu-24.04, 1.21, pkgconfig)	8s
testunit (ubuntu-24.04, 1.21, pkginit)	1m 10s
testunit (ubuntu-24.04, 1.21, dnsutils)	25s
testunit (ubuntu-24.04, 1.21, workers)	4m 30s
testunit (ubuntu-24.04, 1.21, transformers)	46s
testunit (ubuntu-24.04, 1.21, telemetry)	26s
testunit (ubuntu-24.04, 1.22, .)	1m 12s
testunit (ubuntu-24.04, 1.22, pkgconfig)	19s
testunit (ubuntu-24.04, 1.22, pkginit)	1m 20s
testunit (ubuntu-24.04, 1.22, dnsutils)	26s
testunit (ubuntu-24.04, 1.22, workers)	4m 38s
testunit (ubuntu-24.04, 1.22, transformers)	48s
testunit (ubuntu-24.04, 1.22, telemetry)	19s
testunit (ubuntu-24.04, 1.23, .)	1m 2s
testunit (ubuntu-24.04, 1.23, pkgconfig)	8s
testunit (ubuntu-24.04, 1.23, pkginit)	1m 5s
testunit (ubuntu-24.04, 1.23, dnsutils)	22s
testunit (ubuntu-24.04, 1.23, workers)	4m 23s
testunit (ubuntu-24.04, 1.23, transformers)	49s
testunit (ubuntu-24.04, 1.23, telemetry)	30s
config	18s
metrics	28s
	32m 23s

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