Update dependencies and remove obsolete image metadata files

- Updated `caniuse-lite` from version 1.0.30001727 to 1.0.30001731.
- Updated `electron-to-chromium` from version 1.5.191 to 1.5.192.
- Added `bleach==6.2.0` and `webencodings==0.5.1` to `requirements.txt`.
- Deleted obsolete JSON metadata files for images in the `minature-on-a-shelf` directory.
- Updated multiple character PNG files in the `static/Characters` directory.

package-lock.json

@@ -150,9 +150,9 @@
 			}
 		},
 		"node_modules/caniuse-lite": {
-			"version": "1.0.30001727",
-			"resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001727.tgz",
-			"integrity": "sha512-pB68nIHmbN6L/4C6MH1DokyR3bYqFwjaSs/sWDHGj4CTcFtQUQMuJftVwWkXq7mNWOybD3KhUv3oWHoGxgP14Q==",
+			"version": "1.0.30001731",
+			"resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001731.tgz",
+			"integrity": "sha512-lDdp2/wrOmTRWuoB5DpfNkC0rJDU8DqRa6nYL6HK6sytw70QMopt/NIc/9SM7ylItlBWfACXk0tEn37UWM/+mg==",
 			"funding": [
 				{
 					"type": "opencollective",
@@ -241,9 +241,9 @@
 			}
 		},
 		"node_modules/electron-to-chromium": {
-			"version": "1.5.191",
-			"resolved": "https://registry.npmjs.org/electron-to-chromium/-/electron-to-chromium-1.5.191.tgz",
-			"integrity": "sha512-xcwe9ELcuxYLUFqZZxL19Z6HVKcvNkIwhbHUz7L3us6u12yR+7uY89dSl570f/IqNthx8dAw3tojG7i4Ni4tDA==",
+			"version": "1.5.192",
+			"resolved": "https://registry.npmjs.org/electron-to-chromium/-/electron-to-chromium-1.5.192.tgz",
+			"integrity": "sha512-rP8Ez0w7UNw/9j5eSXCe10o1g/8B1P5SM90PCCMVkIRQn2R0LEHWz4Eh9RnxkniuDe1W0cTSOB3MLlkTGDcuCg==",
 			"license": "ISC"
 		},
 		"node_modules/emoji-regex": {