feat(docs)[SEC-1129]: SLSA security feature docs for inso and insomnia artifacts

[saisatishkarra]

Summary

1. Image Signature verification for Inso docker images
2. Software bill of materials for binaries and image artifacts
3. Provenance for binaries and image artifacts

Reason

https://konghq.atlassian.net/browse/SEC-1129

Testing

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Name	Status	Preview	Comments	Updated (UTC)
insomnia-docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jun 24, 2024 3:50pm

[CLAassistant]

All committers have signed the CLA.

[saisatishkarra]

@filfreire i see the below action items:

1. Need official tag for insomnia / Inso repo to move to review from draft
2. Replace 9.3.0-beta.4 and channel=beta with latest/official and stable tags
3. Is this PR change on insomnia-api deployed? The URLs with app=com.insomnia.inso&channel=beta is still pointing to lib@ (old version) instead of core@ (new unified GH version) for inso packages. Can you please confirm if this is working / provide a different release tag with these API changes?

@filfreire / @jackkav Please review the PR and assist with failing docker build step! Thx in advance

[saisatishkarra]

@jackkav seems the bundle install is failing due to the error above when tried to reproduce it locally. Seems it needs lockfile for the bundle to download 4.3.0 jekyll

[filfreire]

We'll remove docker build in a follow-up PR, does not block merging this one