Fix #22: bump to Buildroot v2025.02.7-kkit #74

Job	Run time
container (system) / build (arm64)	13m 46s
container (ntpd) / build (amd64)	5m 46s
container (httpd) / build (amd64)	4m 10s
container (httpd) / build (arm64)	4m 8s
container (system) / build (amd64)	13m 58s
container (ntpd) / build (arm64)	5m 52s
container (neofetch) / build (amd64)	8m 11s
container (nftables) / build (amd64)	4m 30s
container (nftables) / build (arm64)	5m 7s
container (neofetch) / build (arm64)	7m 41s
container (httpd) / push	19s
container (nftables) / push	25s
container (ntpd) / push	29s
container (neofetch) / push	23s
container (system) / push	41s
	1h 15m 26s

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