chore(deps): update ironbank to v1.18.5

This MR contains the following updates:

Package	Update	Change
ironbank/hashicorp/vault (source)	patch	1.18.4 -> 1.18.5
registry1.dso.mil/ironbank/hashicorp/vault (source)	patch	1.18.4 -> 1.18.5

Complete MR checklist

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• Followed upgrade instructions outlined in docs/DEVELOPMENT_MAINTENANCE.md
• Update Docs with new/updated steps as needed
• Tested and Validated Changes made with supporting info like logs or screenshots from test pipelines

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Upgrade Notices

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chart/Chart.yaml

 apiVersion: v2
 name: vault
 version: '0.29.1-bb.4'
-appVersion: 1.18.3
+appVersion: 1.18.4
 kubeVersion: ">= 1.20.0-0"
 description: Official HashiCorp Vault Chart
 home: https://www.vaultproject.io
@@ -33,10 +33,10 @@ dependencies:
 annotations:
   bigbang.dev/maintenanceTrack: bb_integrated
   bigbang.dev/applicationVersions: |
-    - Vault: 1.18.3
+    - Vault: 1.18.4
   helm.sh/images: |
     - name: vault
-      image: registry1.dso.mil/ironbank/hashicorp/vault:1.18.3
+      image: registry1.dso.mil/ironbank/hashicorp/vault:1.18.4
     - name: vault-k8s
       image: registry1.dso.mil/ironbank/hashicorp/vault/vault-k8s:v1.6.1
     - name: vault-csi-provider