Update dependency puppet/selinux to v6 (#2420)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

puppet/Puppetfile

@@ -17,7 +17,7 @@ mod 'puppet/mosquitto', '3.0.0'
 mod 'puppet/nodejs', '12.1.0'
 mod 'puppet/pbuilder', '3.0.0'
 mod 'puppet/redis', '12.1.1'
-mod 'puppet/selinux', '5.0.0'
+mod 'puppet/selinux', '6.0.0'
 mod 'puppet/systemd', '9.4.0'
 mod 'puppet/unattended_upgrades', '9.1.0'
 mod 'puppetlabs/apache', '13.1.0'