build(deps): bump semver from 6.3.0 to 7.5.2

Bumps [semver](https://github.com/npm/node-semver) from 6.3.0 to 7.5.2.
- [Release notes](https://github.com/npm/node-semver/releases)
- [Changelog](https://github.com/npm/node-semver/blob/main/CHANGELOG.md)
- [Commits](npm/node-semver@v6.3.0...v7.5.2)

---
updated-dependencies:
- dependency-name: semver
  dependency-type: direct:production
...

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

packages/@vuepress/shared-utils/package.json

@@ -36,7 +36,7 @@
     "globby": "^9.2.0",
     "gray-matter": "^4.0.1",
     "hash-sum": "^1.0.2",
-    "semver": "^6.0.0",
+    "semver": "^7.5.2",
     "toml": "^3.0.0",
     "upath": "^1.1.0"
   },

yarn.lock

@@ -14315,10 +14315,10 @@ semver@7.0.0:
   resolved "https://registry.npmjs.org/semver/-/semver-7.0.0.tgz#5f3ca35761e47e05b206c6daff2cf814f0316b8e"
   integrity sha512-+GB6zVA9LWh6zovYQLALHwv5rb2PHGlJi3lfiqIHxR0uuwCgefcOJc59v9fv1w8GbStwxuuqqAjI9NMAOOgq1A==
 
-semver@^7.1.1, semver@^7.1.3, semver@^7.3.2, semver@^7.3.4, semver@^7.3.5:
-  version "7.3.5"
-  resolved "https://registry.npmjs.org/semver/-/semver-7.3.5.tgz#0b621c879348d8998e4b0e4be94b3f12e6018ef7"
-  integrity sha512-PoeGJYh8HK4BTO/a9Tf6ZG3veo/A7ZVsYrSA6J8ny9nb3B1VrpkuN+z9OE5wfE5p6H4LchYZsegiQgbJD94ZFQ==
+semver@^7.1.1, semver@^7.1.3, semver@^7.3.2, semver@^7.3.4, semver@^7.3.5, semver@^7.5.2:
+  version "7.5.2"
+  resolved "https://registry.yarnpkg.com/semver/-/semver-7.5.2.tgz#5b851e66d1be07c1cdaf37dfc856f543325a2beb"
+  integrity sha512-SoftuTROv/cRjCze/scjGyiDtcUyxw1rgYQSZY7XTmtR5hX+dm76iDbTH8TkLPHCQmlbQVSSbNZCPM2hb0knnQ==
   dependencies:
     lru-cache "^6.0.0"