chore(deps): update quay.io/fedora/postgresql-15:latest docker digest to e18386e (#4337)

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

scripts/rhdh-openshift-setup/values.yaml

@@ -422,7 +422,7 @@ upstream:
     image:
       registry: quay.io
       repository: fedora/postgresql-15
-      tag: latest@sha256:fe759e3a6a2190dd4cba885d46b6638c5c1a9dd5ad13e3e56fd8f1e031e8c0ee
+      tag: latest@sha256:e18386e401b709298d60d44182033915ca5ab814e7f779f55498153d33ea9336
     auth:
       secretKeys:
         adminPasswordKey: postgres-password