Bump vault from 0.18.1 to 0.18.2 in /WcaOnRails

Bumps [vault](https://github.com/hashicorp/vault-ruby) from 0.18.1 to 0.18.2.
- [Changelog](https://github.com/hashicorp/vault-ruby/blob/master/CHANGELOG.md)
- [Commits](hashicorp/vault-ruby@v0.18.1...v0.18.2)

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

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

WcaOnRails/Gemfile.lock

@@ -139,7 +139,7 @@ GEM
     ast (2.4.2)
     autoprefixer-rails (9.4.7)
       execjs
-    aws-eventstream (1.2.0)
+    aws-eventstream (1.3.0)
     aws-partitions (1.843.0)
     aws-sdk-cloudfront (1.83.0)
       aws-sdk-core (~> 3, >= 3.184.0)
@@ -159,7 +159,7 @@ GEM
       aws-sdk-core (~> 3, >= 3.181.0)
       aws-sdk-kms (~> 1)
       aws-sigv4 (~> 1.6)
-    aws-sigv4 (1.6.1)
+    aws-sigv4 (1.8.0)
       aws-eventstream (~> 1, >= 1.0.2)
     babel-source (5.8.35)
     babel-transpiler (0.7.0)
@@ -735,7 +735,7 @@ GEM
       activemodel
       mail (>= 2.6.1)
       simpleidn
-    vault (0.18.1)
+    vault (0.18.2)
       aws-sigv4
     version_gem (1.1.1)
     warden (1.2.9)