build(deps): bump github.com/mattn/go-isatty from 0.0.19 to 0.0.20 #8430

Job	Run time
Preliminary configuration	7s
liqoctl (linux, arm64)	5m 50s
liqoctl (linux, amd64)	5m 21s
build (auth-service)	25m 32s
liqoctl (windows, amd64)	4m 44s
build (cert-creator)	19s
liqoctl (darwin, arm64)	4m 27s
build (crd-replicator)	19m 40s
liqoctl (darwin, amd64)	4m 27s
build (liqo-controller-manager)	25m 6s
build (discovery)	17m 9s
build (liqonet)	34m 15s
build (uninstaller)	19m 36s
build (virtual-kubelet)	23m 30s
build (metric-agent)	23m 1s
build (telemetry)	15m 8s
build (proxy)	26s
post-build	3s
release	0s
e2e-test-trigger	0s
	3h 48m 41s

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