Update ssh_known_hosts to address GitHub RSA and update other hosts

[tomjn]

see https://github.blog/2023-03-23-we-updated-our-rsa-ssh-host-key/

Also checked gitlab and bitbucket and added fingerprints for gitlabs other key types

Checks

• [x] I've updated the changelog.
• [ ] I've tested this PR
• [x] This PR is for the develop branch not the stable branch.
• [ ] This PR is complete and ready for review.

[update-docs[bot]]

Thanks for opening this pull request! Make sure CHANGELOG.md gets updated with this change, additionally any docs that need updated can be found at https://github.com/Varying-Vagrant-Vagrants/varyingvagrantvagrants.org

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[tomjn]

@dolanite it was just waiting for someone who wasn't me to test/code review