[Snyk] Security upgrade undici from 5.28.3 to 5.29.0 (#307)

fix: package.json & package-lock.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-UNDICI-10176064

Co-authored-by: snyk-bot <[email protected]>

Author: blockstack-devops

package-lock.json

@@ -76,6 +76,6 @@
     "postgres": "^3.3.1",
     "sharp": "^0.33.3",
     "stacks-encoding-native-js": "^1.0.0",
-    "undici": "^5.12.0"
+    "undici": "^5.29.0"
   }
 }