Bump bcrypt from 3.1.20 to 3.1.21

Bumps [bcrypt](https://github.com/bcrypt-ruby/bcrypt-ruby) from 3.1.20 to 3.1.21.
- [Release notes](https://github.com/bcrypt-ruby/bcrypt-ruby/releases)
- [Changelog](https://github.com/bcrypt-ruby/bcrypt-ruby/blob/master/CHANGELOG)
- [Commits](bcrypt-ruby/bcrypt-ruby@v3.1.20...v3.1.21)

---
updated-dependencies:
- dependency-name: bcrypt
  dependency-version: 3.1.21
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Gemfile

@@ -10,7 +10,7 @@ gem "puma", ">= 5.0"
 # gem "jbuilder"
 
 # Use Active Model has_secure_password [https://guides.rubyonrails.org/active_model_basics.html#securepassword]
-gem "bcrypt", "~> 3.1.7"
+gem "bcrypt", "~> 3.1.21"
 
 # Windows does not include zoneinfo files, so bundle the tzinfo-data gem
 gem "tzinfo-data", platforms: %i[ windows jruby ]

Gemfile.lock

@@ -79,7 +79,7 @@ GEM
       public_suffix (>= 2.0.2, < 8.0)
     ast (2.4.3)
     base64 (0.3.0)
-    bcrypt (3.1.20)
+    bcrypt (3.1.21)
     bcrypt_pbkdf (1.1.2)
     bcrypt_pbkdf (1.1.2-arm64-darwin)
     bigdecimal (4.0.1)
@@ -361,7 +361,7 @@ PLATFORMS
   x86_64-linux
 
 DEPENDENCIES
-  bcrypt (~> 3.1.7)
+  bcrypt (~> 3.1.21)
   bootsnap
   brakeman
   bundler-audit