Bump vault from 0.14.0 to 0.15.0 (#9697)

* Bump vault from 0.14.0 to 0.15.0

Bumps [vault](https://github.com/hashicorp/vault-ruby) from 0.14.0 to 0.15.0.
- [Release notes](https://github.com/hashicorp/vault-ruby/releases)
- [Changelog](https://github.com/hashicorp/vault-ruby/blob/master/CHANGELOG.md)
- [Commits](https://github.com/hashicorp/vault-ruby/compare/v0.14.0...v0.15.0)

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

* Bump vault from 0.14.0 to 0.15.0 (Update vendor/cache)

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Gemfile

@@ -105,7 +105,7 @@ gem "twitter", "~> 7.0" # A Ruby interface to the Twitter API
 gem "uglifier", "~> 4.2" # Uglifier minifies JavaScript files
 gem "ulid", "~> 1.2" # Universally Unique Lexicographically Sortable Identifier implementation for Ruby
 gem "validate_url", "~> 1.0" # Library for validating urls in Rails
-gem "vault", "~> 0.14" # Used to store secrets
+gem "vault", "~> 0.15" # Used to store secrets
 gem "webpacker", "~> 5.1.1" # Use webpack to manage app-like JavaScript modules in Rails
 
 group :development do

Gemfile.lock

@@ -797,7 +797,7 @@ GEM
     validate_url (1.0.11)
       activemodel (>= 3.0.0)
       public_suffix
-    vault (0.14.0)
+    vault (0.15.0)
       aws-sigv4
     vcr (6.0.0)
     virtus (1.0.5)
@@ -982,7 +982,7 @@ DEPENDENCIES
   uglifier (~> 4.2)
   ulid (~> 1.2)
   validate_url (~> 1.0)
-  vault (~> 0.14)
+  vault (~> 0.15)
   vcr (~> 6.0)
   web-console (~> 4.0)
   webdrivers (~> 4.4)