Update dependency diff to v7

package.json

@@ -31,7 +31,7 @@
   "homepage": "https://github.com/Unibeautify/website#readme",
   "dependencies": {},
   "devDependencies": {
-    "@types/diff": "4.0.2",
+    "@types/diff": "7.0.0",
     "@types/fs-extra": "8.1.5",
     "@types/lodash": "4.17.13",
     "@unibeautify/beautifier-black": "0.1.2",
@@ -52,7 +52,7 @@
     "@unibeautify/ugly-samples": "0.2.10",
     "array-flatten": "2.1.2",
     "csscomb": "4.3.0",
-    "diff": "4.0.2",
+    "diff": "7.0.0",
     "eslint": "4.19.1",
     "eslint-plugin-react": "7.37.2",
     "fs-extra": "8.1.0",

yarn.lock

@@ -269,10 +269,10 @@
   resolved "https://registry.yarnpkg.com/@types/color-name/-/color-name-1.1.1.tgz#1c1261bbeaa10a8055bbc5d8ab84b7b2afc846a0"
   integrity sha512-rr+OQyAjxze7GgWrSaJwydHStIhHq2lvY3BOC2Mj7KnzI7XK0Uw1TOOdI9lDoajEbSWLiYgoo4f1R51erQfhPQ==
 
-"@types/diff@4.0.2":
-  version "4.0.2"
-  resolved "https://registry.yarnpkg.com/@types/diff/-/diff-4.0.2.tgz#2e9bb89f9acc3ab0108f0f3dc4dbdcf2fff8a99c"
-  integrity sha512-mIenTfsIe586/yzsyfql69KRnA75S8SVXQbTLpDejRrjH0QSJcpu3AUOi/Vjnt9IOsXKxPhJfGpQUNMueIU1fQ==
+"@types/diff@7.0.0":
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/@types/diff/-/diff-7.0.0.tgz#e9f6a33a72164b3a80b983114a1cef9a6f0c2165"
+  integrity sha512-sVpkpbnTJL9CYoDf4U+tHaQLe5HiTaHWY7m9FuYA7oMCHwC9ie0Vh9eIGapyzYrU3+pILlSY2fAc4elfw5m4dg==
 
 "@types/[email protected]":
   version "8.1.5"
@@ -1175,10 +1175,10 @@ del@^2.0.2:
     pinkie-promise "^2.0.0"
     rimraf "^2.2.8"
 
-diff@4.0.2:
-  version "4.0.2"
-  resolved "https://registry.yarnpkg.com/diff/-/diff-4.0.2.tgz#60f3aecb89d5fae520c11aa19efc2bb982aade7d"
-  integrity sha512-58lmxKSA4BNyLz+HHMUzlOEpg09FV+ev6ZMe3vJihgdxzgcwZ8VoEEPmALCZG9LmqfVoNMMKpttIYTVG6uDY7A==
+diff@7.0.0:
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/diff/-/diff-7.0.0.tgz#3fb34d387cd76d803f6eebea67b921dab0182a9a"
+  integrity sha512-PJWHUb1RFevKCwaFA9RlG5tCd+FO5iRh9A8HEtkmBH2Li03iJriB6m6JIN4rGz3K3JLawI7/veA1xzRKP6ISBw==
 
 diff@^4.0.1:
   version "4.0.1"