add a changelog entry

Author: koddsson

.changeset/hungry-candles-carry.md

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+---
+'@web/dev-server-esbuild': minor
+---
+
+Update ESBuild to latest version.
+
+ESBuild has changed how TypeScript decorators are enabled in preparation for JavaScript decorators to land in browsers. ESBuild now requires the `experimentalDecorators` key to be set to `true` in the `tsconfig.json` for TypeScript decorators to be enabled.
+
+If you are having issues with decorators after updating to this version, try setting the `experimentalDecorators` key in your `tsconfig.json`.

.changeset/slimy-starfishes-prove.md

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+---
+'rollup-plugin-workbox': major
+---
+
+Update ESBuild to latest version