build(deps-dev): bump kamal from 1.4.0 to 1.5.1

Bumps [kamal](https://github.com/basecamp/kamal) from 1.4.0 to 1.5.1.
- [Release notes](https://github.com/basecamp/kamal/releases)
- [Commits](basecamp/kamal@v1.4.0...v1.5.1)

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

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

Gemfile

@@ -25,7 +25,7 @@ group :development, :test do
 end
 
 group :development do
- gem 'kamal', '~> 1.4'
+ gem 'kamal', '~> 1.5'
  gem "letter_opener", "~> 1.10"
  gem 'rubocop', '~> 1.63'
  gem 'rubocop-performance', '~> 1.21', require: false

Gemfile.lock

@@ -138,7 +138,7 @@ GEM
  json (2.7.2)
  jwt (2.8.1)
  base64
- kamal (1.4.0)
+ kamal (1.5.1)
  activesupport (>= 7.0)
  base64 (~> 0.2)
  bcrypt_pbkdf (~> 1.0)
@@ -186,7 +186,7 @@ GEM
  net-ssh (>= 5.0.0, < 8.0.0)
  net-smtp (0.4.0.1)
  net-protocol
- net-ssh (7.2.1)
+ net-ssh (7.2.3)
  nio4r (2.7.0)
  nokogiri (1.16.4)
  mini_portile2 (~> 2.8.2)
@@ -342,7 +342,8 @@ GEM
  actionpack (>= 4.0)
  activesupport (>= 4.0)
  sprockets (>= 3.0.0)
- sshkit (1.22.0)
+ sshkit (1.22.1)
+ base64
  mutex_m
  net-scp (>= 1.1.2)
  net-sftp (>= 2.1.2)
@@ -388,7 +389,7 @@ DEPENDENCIES
  devise (~> 4.9)
  factory_bot_rails (~> 6.4)
  importmap-rails (~> 2.0)
- kamal (~> 1.4)
+ kamal (~> 1.5)
  letter_opener (~> 1.10)
  omniauth (~> 2.1)
  omniauth-google-oauth2 (~> 1.1)