chore(deps): update dependency @types/diff to v8

Author: renovate[bot]

package.json

@@ -98,7 +98,7 @@
 		"@sapphire/prettier-config": "^2.0.0",
 		"@sapphire/ts-config": "^5.0.3",
 		"@types/backoff": "^2.5.5",
-		"@types/diff": "^6.0.0",
+		"@types/diff": "^8.0.0",
 		"@types/he": "^1.2.3",
 		"@types/node": "^22.8.7",
 		"@types/pg": "^8.15.6",