Bump pixelmatch from 5.2.1 to 5.3.0

Bumps [pixelmatch](https://github.com/mapbox/pixelmatch) from 5.2.1 to 5.3.0.
- [Release notes](https://github.com/mapbox/pixelmatch/releases)
- [Commits](https://github.com/mapbox/pixelmatch/compare/v5.2.1...v5.3.0)

---
updated-dependencies:
- dependency-name: pixelmatch
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

package-lock.json

@@ -7537,26 +7537,17 @@
       }
     },
     "node_modules/pixelmatch": {
-      "version": "5.2.1",
-      "resolved": "https://registry.npmjs.org/pixelmatch/-/pixelmatch-5.2.1.tgz",
-      "integrity": "sha512-WjcAdYSnKrrdDdqTcVEY7aB7UhhwjYQKYhHiBXdJef0MOaQeYpUdQ+iVyBLa5YBKS8MPVPPMX7rpOByISLpeEQ==",
+      "version": "5.3.0",
+      "resolved": "https://registry.npmjs.org/pixelmatch/-/pixelmatch-5.3.0.tgz",
+      "integrity": "sha512-o8mkY4E/+LNUf6LzX96ht6k6CEDi65k9G2rjMtBe9Oo+VPKSvl+0GKHuH/AlG+GA5LPG/i5hrekkxUc3s2HU+Q==",
       "dev": true,
       "dependencies": {
-        "pngjs": "^4.0.1"
+        "pngjs": "^6.0.0"
       },
       "bin": {
         "pixelmatch": "bin/pixelmatch"
       }
     },
-    "node_modules/pixelmatch/node_modules/pngjs": {
-      "version": "4.0.1",
-      "resolved": "https://registry.npmjs.org/pngjs/-/pngjs-4.0.1.tgz",
-      "integrity": "sha512-rf5+2/ioHeQxR6IxuYNYGFytUyG3lma/WW1nsmjeHlWwtb2aByla6dkVc8pmJ9nplzkTA0q2xx7mMWrOTqT4Gg==",
-      "dev": true,
-      "engines": {
-        "node": ">=8.0.0"
-      }
-    },
     "node_modules/pkg-dir": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/pkg-dir/-/pkg-dir-2.0.0.tgz",
@@ -16062,20 +16053,12 @@
       "dev": true
     },
     "pixelmatch": {
-      "version": "5.2.1",
-      "resolved": "https://registry.npmjs.org/pixelmatch/-/pixelmatch-5.2.1.tgz",
-      "integrity": "sha512-WjcAdYSnKrrdDdqTcVEY7aB7UhhwjYQKYhHiBXdJef0MOaQeYpUdQ+iVyBLa5YBKS8MPVPPMX7rpOByISLpeEQ==",
+      "version": "5.3.0",
+      "resolved": "https://registry.npmjs.org/pixelmatch/-/pixelmatch-5.3.0.tgz",
+      "integrity": "sha512-o8mkY4E/+LNUf6LzX96ht6k6CEDi65k9G2rjMtBe9Oo+VPKSvl+0GKHuH/AlG+GA5LPG/i5hrekkxUc3s2HU+Q==",
       "dev": true,
       "requires": {
-        "pngjs": "^4.0.1"
-      },
-      "dependencies": {
-        "pngjs": {
-          "version": "4.0.1",
-          "resolved": "https://registry.npmjs.org/pngjs/-/pngjs-4.0.1.tgz",
-          "integrity": "sha512-rf5+2/ioHeQxR6IxuYNYGFytUyG3lma/WW1nsmjeHlWwtb2aByla6dkVc8pmJ9nplzkTA0q2xx7mMWrOTqT4Gg==",
-          "dev": true
-        }
+        "pngjs": "^6.0.0"
       }
     },
     "pkg-dir": {