Bump esbuild from 0.12.1 to 0.12.6 (#622)

Bumps [esbuild](https://github.com/evanw/esbuild) from 0.12.1 to 0.12.6.
- [Release notes](https://github.com/evanw/esbuild/releases)
- [Changelog](https://github.com/evanw/esbuild/blob/master/CHANGELOG.md)
- [Commits](evanw/esbuild@v0.12.1...v0.12.6)

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Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Author: dependabot-preview[bot]

package-lock.json

@@ -39,7 +39,7 @@
     "@tsconfig/svelte": "^2.0.1",
     "@types/express": "^4.17.11",
     "@types/node": "^15.12.1",
-    "esbuild": "^0.12.1",
+    "esbuild": "^0.12.6",
     "npm-run-all": "^4.1.5",
     "postcss": "8.3.0",
     "postcss-cli": "^8.3.1",