build(deps-dev): bump pngjs from 6.0.0 to 7.0.0

Bumps [pngjs](https://github.com/pngjs/pngjs) from 6.0.0 to 7.0.0.
- [Changelog](https://github.com/pngjs/pngjs/blob/main/CHANGELOG.md)
- [Commits](https://github.com/pngjs/pngjs/commits)

---
updated-dependencies:
- dependency-name: pngjs
  dependency-version: 7.0.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package-lock.json

@@ -33,7 +33,7 @@
     "@types/pixelmatch": "^5.2.3",
     "@types/pngjs": "^6.0.0",
     "pixelmatch": "^5.1.0",
-    "pngjs": "^6.0.0"
+    "pngjs": "^7.0.0"
   },
   "publishConfig": {
     "access": "public"

packages/tiler-sharp/package.json

@@ -31,7 +31,7 @@
     "@types/pixelmatch": "^5.2.3",
     "@types/pngjs": "^6.0.0",
     "pixelmatch": "^5.1.0",
-    "pngjs": "^6.0.0"
+    "pngjs": "^7.0.0"
   },
   "publishConfig": {
     "access": "public"