chore(deps): update module github.com/spiffe/spire to v1.15.3

Author: agntcy-automation[bot]

Taskfile.vars.yml

@@ -20,7 +20,7 @@ vars:
   # renovate: datasource=go depName=github.com/project-zot/zot versioning=semver
   ZOT_VERSION: "2.1.20"
   # renovate: datasource=go depName=github.com/spiffe/spire versioning=semver
-  SPIRE_VERSION: "1.15.2"
+  SPIRE_VERSION: "1.15.3"
   # renovate: datasource=docker depName=docker.io/bitnami/postgresql
   POSTGRESQL_VERSION: "latest@sha256:7b9c5292a8e8b38e7172705cc6e49e34b9a8d9c297c4c7ae04130a3e6a28f3b0"