automation: Update devsec.hardening to version 7.8.0

This MR contains the following updates:

Package	Type	Update	Change
devsec.hardening (source)	galaxy-collection	minor	7.7.0 -> 7.8.0

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Release Notes

dev-sec/ansible-os-hardening

v7.8.0

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Full Changelog

Implemented enhancements:

• SHA_CRYPT_MIN_ROUNDS should be increased in login.defs #​365 [os_hardening]
• Add support for Rocky Linux 8 #​454 [mysql_hardening] [os_hardening] [ssh_hardening] (sherwind)
• make sha rounds configurable and increase no of rounds #​452 [os_hardening] (rndmh3ro)

Fixed bugs:

• add tag always to os dependent vars task #​456 [mysql_hardening] [os_hardening] [ssh_hardening] (schurzi)
• Use include_tasks for os_hardening/main.yml #​451 [os_hardening] (coadler)

Closed issues:

• add "when" statements for every import_tasks in hardening.yml #​453
• Disable IPv6 | sysctl-18 net.ipv6.conf.all.disable_ipv6: 1 #​406 [os_hardening]

Merged pull requests:

• Cleanup old OS-support and simplify vars #​458 [os_hardening] [ssh_hardening] (rndmh3ro)
• add rocky linux 8 tests and make sure that all relevant tasks are execd #​457 [mysql_hardening] [nginx_hardening] [os_hardening] [ssh_hardening] (rndmh3ro)
• add "when" statements in hardening.yml(#​453) #​455 [os_hardening] (jqiuyin)
• enable ipv6 globally #​450 [os_hardening] [ssh_hardening] (rndmh3ro)

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