Bump nostr-tools from 1.15.0 to 2.7.1

Bumps [nostr-tools](https://github.com/nbd-wtf/nostr-tools) from 1.15.0 to 2.7.1.
- [Release notes](https://github.com/nbd-wtf/nostr-tools/releases)
- [Commits](nbd-wtf/nostr-tools@v1.15.0...v2.7.1)

---
updated-dependencies:
- dependency-name: nostr-tools
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

package.json

@@ -27,7 +27,7 @@
   "dependencies": {
     "@actions/core": "^1.10.0",
     "js-yaml": "^4.1.0",
-    "nostr-tools": "^1.10.1",
+    "nostr-tools": "^2.7.1",
     "websocket-polyfill": "^0.0.3",
     "ws": "^8.16.0"
   },