Bump npm from 6.14.8 to 7.6.3

Bumps [npm](https://github.com/npm/cli) from 6.14.8 to 7.6.3.
- [Release notes](https://github.com/npm/cli/releases)
- [Changelog](https://github.com/npm/cli/blob/latest/CHANGELOG.md)
- [Commits](npm/cli@v6.14.8...v7.6.3)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package.json

@@ -224,7 +224,7 @@
     "mock-fs": "^4.12.0",
     "moment": "^2.26.0",
     "node-pty": "^0.9.0",
-    "npm": "^6.14.8",
+    "npm": "^7.6.3",
     "openid-client": "^3.15.2",
     "p-limit": "^3.1.0",
     "path-to-regexp": "^6.1.0",