build(deps): bump docker/build-push-action from 6.5.0 to 6.6.1 in the docker-github-actions group #169

Job	Run time
Build NGINX OSS image	27s
Test NGINX OSS image (virtual)	1m 21s
Test NGINX OSS image (virtual-v2)	1m 26s
Build NGINX OSS image using latest njs commit	1m 17s
Build NGINX OSS unprivileged image	22s
Test NGINX OSS unprivileged image	1m 38s
Test NGINX OSS image using latest njs commit	1m 15s
Tag and push all built and tested NGINX images	0s
	7m 46s

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