Update sealed-secrets to 2.17.3 (#880)

Co-authored-by: mkjpryor <[email protected]>

Author: azimuth-automation-bot[bot]

roles/sealed_secrets/defaults/main.yml

@@ -2,7 +2,7 @@
 
 sealed_secrets_chart_repo: https://bitnami-labs.github.io/sealed-secrets
 sealed_secrets_chart_name: sealed-secrets
-sealed_secrets_chart_version: 2.17.1
+sealed_secrets_chart_version: 2.17.3
 
 sealed_secrets_release_namespace: sealed-secrets-system
 sealed_secrets_release_name: sealed-secrets