chore(changesets): add

Author: nibtime

.changeset/cyan-trees-sneeze.md

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+---
+"@next-safe/middleware": minor
+---
+
+Internal redesign for Next.js 12.2 (`req.page` deprecated) ([#37](https://github.com/nibtime/next-safe-middleware/issues/37))

.changeset/healthy-ducks-lay.md

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+---
+"e2e": minor
+---
+
+upgrade to Next 12.2. with stable root-level middleware

.changeset/new-crabs-ring.md

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+---
+"@next-safe/middleware": patch
+---
+
+fix: `enhanceAppWithNonce` as separate function.Must spread `nonce` into `pageProps`, else fails with Next 12.2

.changeset/selfish-zebras-appear.md

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+---
+"@next-safe/middleware": patch
+---
+
+fix: guard critical section with lockfile when writing out hashes for CSP to file at build time

.changeset/smart-monkeys-attend.md

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+---
+"@next-safe/middleware": minor
+---
+
+provide new middleware abstractions for Next.js 12.2 stable middleware
+
+* `matchChain` function that allows to disable chain execution for certain requests with a matcher (predicate on `NextRequest`)
+* `continued` function that allows to continue a middleware response to a middleware chain
+* `isPageRequest` matcher that matches only requests to Next.js pages