Bump lodash from 4.17.15 to 4.17.21 (#138)

Bumps [lodash](https://github.com/lodash/lodash) from 4.17.15 to 4.17.21.
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](lodash/lodash@4.17.15...4.17.21)

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

package-lock.json

@@ -97,7 +97,7 @@
     "fs-extra": "7.0.1",
     "gogs-client": "0.5.2",
     "isEqual": "1.0.3",
-    "lodash": "4.17.15",
+    "lodash": "4.17.21",
     "marked": "0.6.2",
     "ospath": "1.2.2",
     "path-extra": "4.3.0",