chore(main): release 6.4.2

[kitchen-porter]

🤖 I have created a release beep boop

6.4.2 (2025-10-16)

Bug Fixes

• ci: Update workflows to use release pipeline (#220) (39a5c2e)

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[github-actions]

Slowest examples

Top 6 slowest examples (1.86 seconds, 100% of total time)

Example	Description	Time in seconds
spec/default_spec.rb:27	postfix::default on Ubuntu 20.04 [COOK-4423] renders file main.cf with /etc/postfix/cacert.pem	1.02936
spec/sasl_auth_spec.rb:13	postfix::sasl_auth password file template does not display sensitive information	0.66526
spec/default_spec.rb:13	postfix::default on Centos 8 [COOK-4423] renders file main.cf with /etc/pki/tls/cert.pem	0.10955
spec/wrapper_spec.rb:14	test::default _attributes recipes keeps wrapper cookbook default set attributes	0.05772
spec/default_spec.rb:31	postfix::default on Ubuntu 20.04 [COOK-4619] does not set recipient_delimiter	0.00096
spec/default_spec.rb:17	postfix::default on Centos 8 [COOK-4619] does not set recipient_delimiter	0.0008

[github-actions]

🚫 [linkspector] _{reported by reviewdog 🐶}
Cannot reach 6.4.1...v6.4.2 Status: 404