chore(deps-dev): bump aegir from 20.6.1 to 21.0.2 (#27)

Bumps [aegir](https://github.com/ipfs/aegir) from 20.6.1 to 21.0.2.
- [Release notes](https://github.com/ipfs/aegir/releases)
- [Changelog](https://github.com/ipfs/aegir/blob/master/CHANGELOG.md)
- [Commits](ipfs/aegir@v20.6.1...v21.0.2)

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

Author: dependabot-preview[bot]

package.json

@@ -18,7 +18,7 @@
     "coverage": "aegir coverage"
   },
   "devDependencies": {
-    "aegir": "^20.4.1",
+    "aegir": "^21.0.2",
     "chai": "^4.2.0",
     "cids": "^0.7.1",
     "go-ipfs-dep": "^0.4.23",