fix(deps): update nextjs monorepo to v15.1.2

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@next/bundle-analyzer (source)	15.1.1 -> 15.1.2
next (source)	15.1.1 -> 15.1.2

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Release Notes

vercel/next.js (@​next/bundle-analyzer)

v15.1.2

Compare Source

vercel/next.js (next)

v15.1.2

Compare Source

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