build(deps): bump docker/build-push-action from 6.3.0 to 6.4.1 in the docker-github-actions group #151

Job	Run time
Build NGINX OSS image	24s
Test NGINX OSS image (virtual)	1m 15s
Test NGINX OSS image (virtual-v2)	1m 39s
Build NGINX OSS unprivileged image	21s
Build NGINX OSS image using latest njs commit	1m 31s
Test NGINX OSS unprivileged image	1m 32s
Test NGINX OSS image using latest njs commit	2m 59s
Tag and push all built and tested NGINX images	0s
	9m 41s

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