build: stale bot adjustements Removed not existing labels and made the error message a bit more verbose to tell people what to expect next.
build: stale bot adjustements
Removed not existing labels and made the error message a bit more
verbose to tell people what to expect next.

Signed-off-by: Lorenzo Fontana <638e8f0171575864326f06d2a5f8e72287427b15@linux.com>

draios/falco,draios/falco,draios/falco,draios/falco,draios/falco,draios/falco,draios/falco,draios/falco