Bump image-size from 0.7.4 to 0.8.3

Bumps [image-size](https://github.com/image-size/image-size) from 0.7.4 to 0.8.3.
- [Release notes](https://github.com/image-size/image-size/releases)
- [Commits](https://github.com/image-size/image-size/compare/v0.7.4...v0.8.3)

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

package.json

@@ -50,7 +50,7 @@
     "ejs": "^2.6.1",
     "form-data": "^2.3.3",
     "http-errors": "^1.7.1",
-    "image-size": "^0.7.1",
+    "image-size": "^0.8.3",
     "jimp": "^0.9.3",
     "jquery": "^3.3.1",
     "kcors": "^2.2.2",