Add Hot Takes and IGS nav links

[PietiKinnunen]

• Added navigation link to /resources/hot-takes/
• Noticed that Identity Governance & Security link was missing from the docs nav so I added it as well

Main repo PR https://github.com/gravitational/next/pull/2284

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Name	Status	Preview	Comments	Updated (UTC)
docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 27, 2023 3:57pm