Bump kamal from 2.2.2 to 2.3.0

Bumps [kamal](https://github.com/basecamp/kamal) from 2.2.2 to 2.3.0.
- [Release notes](https://github.com/basecamp/kamal/releases)
- [Commits](basecamp/kamal@v2.2.2...v2.3.0)

---
updated-dependencies:
- dependency-name: kamal
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Gemfile.lock

@@ -177,17 +177,17 @@ GEM
       actionview (>= 5.0.0)
       activesupport (>= 5.0.0)
     jmespath (1.6.2)
-    kamal (2.2.2)
+    kamal (2.3.0)
       activesupport (>= 7.0)
       base64 (~> 0.2)
       bcrypt_pbkdf (~> 1.0)
       concurrent-ruby (~> 1.2)
       dotenv (~> 3.1)
       ed25519 (~> 1.2)
-      net-ssh (~> 7.0)
+      net-ssh (~> 7.3)
       sshkit (>= 1.23.0, < 2.0)
       thor (~> 1.3)
-      zeitwerk (~> 2.5)
+      zeitwerk (>= 2.6.18, < 3.0)
     llhttp-ffi (0.5.0)
       ffi-compiler (~> 1.0)
       rake (~> 13.0)