Bump kamal from 1.9.1 to 2.1.1

Bumps [kamal](https://github.com/basecamp/kamal) from 1.9.1 to 2.1.1.
- [Release notes](https://github.com/basecamp/kamal/releases)
- [Commits](basecamp/kamal@v1.9.1...v2.1.1)

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

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

Gemfile.lock

@@ -106,10 +106,6 @@ GEM
       activesupport (>= 5.2.0)
     addressable (2.8.7)
       public_suffix (>= 2.0.2, < 7.0)
-    airrecord (1.0.12)
-      faraday (>= 1.0, < 3.0)
-      faraday-net_http_persistent
-      net-http-persistent
     appsignal (4.0.9)
       logger
       rack
@@ -189,10 +185,10 @@ GEM
       irb (~> 1.10)
       reline (>= 0.3.8)
     debug_inspector (1.2.0)
-    dotenv (2.8.1)
-    dotenv-rails (2.8.1)
-      dotenv (= 2.8.1)
-      railties (>= 3.2)
+    dotenv (3.1.4)
+    dotenv-rails (3.1.4)
+      dotenv (= 3.1.4)
+      railties (>= 6.1)
     drb (2.2.1)
     ed25519 (1.3.0)
     erubi (1.13.0)
@@ -206,9 +202,6 @@ GEM
       faraday (>= 1, < 3)
     faraday-net_http (3.3.0)
       net-http
-    faraday-net_http_persistent (2.1.0)
-      faraday (~> 2.5)
-      net-http-persistent (~> 4.0)
     ferrum (0.15)
       addressable (~> 2.5)
       concurrent-ruby (~> 1.1)
@@ -249,16 +242,16 @@ GEM
       activesupport (>= 5.0.0)
     jmespath (1.6.2)
     json (2.7.2)
-    kamal (1.9.1)
+    kamal (2.1.1)
       activesupport (>= 7.0)
       base64 (~> 0.2)
       bcrypt_pbkdf (~> 1.0)
       concurrent-ruby (~> 1.2)
-      dotenv (~> 2.8)
+      dotenv (~> 3.1)
       ed25519 (~> 1.2)
       net-ssh (~> 7.0)
       sshkit (>= 1.23.0, < 2.0)
-      thor (~> 1.2)
+      thor (~> 1.3)
       zeitwerk (~> 2.5)
     language_server-protocol (3.17.0.3)
     launchy (3.0.1)
@@ -295,8 +288,6 @@ GEM
     msgpack (1.7.2)
     net-http (0.4.1)
       uri
-    net-http-persistent (4.0.2)
-      connection_pool (~> 2.2)
     net-imap (0.4.16)
       date
       net-protocol
@@ -310,7 +301,7 @@ GEM
       net-ssh (>= 5.0.0, < 8.0.0)
     net-smtp (0.5.0)
       net-protocol
-    net-ssh (7.2.3)
+    net-ssh (7.3.0)
     nio4r (2.7.3)
     nokogiri (1.16.7-aarch64-linux)
       racc (~> 1.4)