Update pgpool docs examples to latest supported version (4.6.0)

[tamalsaha]

Bumps the pgpool example and guide manifests to the latest supported version (4.6.0) per the installer active_versions.json.

• General "deploy a pgpool" examples use the latest version.
• Version-upgrade guides keep a nearest-older source and upgrade to the latest (preserved as a real upgrade, not a no-op).
• Illustrative command outputs (kubectl get ...version tables, describe dumps) and other products'/backend versions are left unchanged.

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Review details

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: fc84c79a-8f75-410d-8d6d-1f93199e1873

📥 Commits

Reviewing files that changed from the base of the PR and between d9a1f1a and aaca3cc.

📒 Files selected for processing (44)

• docs/examples/pgpool/autoscaling/compute/pgpool-autoscale.yaml
• docs/examples/pgpool/configuration/pgpool-config-file.yaml
• docs/examples/pgpool/configuration/pgpool-config-sidecar.yaml
• docs/examples/pgpool/configuration/pgpool-init-config.yaml
• docs/examples/pgpool/configuration/pgpool-node-selector.yaml
• docs/examples/pgpool/configuration/pgpool-with-tolerations.yaml
• docs/examples/pgpool/configuration/pgpool-without-tolerations.yaml
• docs/examples/pgpool/configuration/pp-misc-config.yaml
• docs/examples/pgpool/custom-rbac/pgpool-new.yaml
• docs/examples/pgpool/custom-rbac/pp-custom.yaml
• docs/examples/pgpool/initialization/git-sync/git-sync-public.yaml
• docs/examples/pgpool/monitroing/builtin-prom-pp.yaml
• docs/examples/pgpool/monitroing/coreos-prom-pp.yaml
• docs/examples/pgpool/quickstart/quick-pgpool.yaml
• docs/examples/pgpool/reconfiguration/pp-custom-config.yaml
• docs/examples/pgpool/reconfigure-tls/pgpool.yaml
• docs/examples/pgpool/restart/pgpool.yaml
• docs/examples/pgpool/scaling/pp-horizontal.yaml
• docs/examples/pgpool/scaling/pp-vertical.yaml
• docs/examples/pgpool/sync-users/pgpool-sync.yaml
• docs/examples/pgpool/tls/pgpool-ssl.yaml
• docs/examples/pgpool/update-version/pp-update.yaml
• docs/examples/pgpool/update-version/ppops-update.yaml
• docs/examples/pgpool/vs.yaml
• docs/guides/pgpool/autoscaler/compute/compute-autoscale.md
• docs/guides/pgpool/concepts/pgpool.md
• docs/guides/pgpool/configuration/using-config-file.md
• docs/guides/pgpool/configuration/using-init-config.md
• docs/guides/pgpool/configuration/using-podtemplate.md
• docs/guides/pgpool/custom-rbac/using-custom-rbac.md
• docs/guides/pgpool/initializing/git-sync.md
• docs/guides/pgpool/monitoring/overview.md
• docs/guides/pgpool/monitoring/using-builtin-prometheus.md
• docs/guides/pgpool/monitoring/using-prometheus-operator.md
• docs/guides/pgpool/quickstart/quickstart.md
• docs/guides/pgpool/reconfigure-tls/reconfigure-tls.md
• docs/guides/pgpool/reconfigure/reconfigure-pgpool.md
• docs/guides/pgpool/restart/restart.md
• docs/guides/pgpool/scaling/horizontal-scaling/horizontal-ops.md
• docs/guides/pgpool/scaling/vertical-scaling/vertical-ops.md
• docs/guides/pgpool/sync-users/sync-users-pgpool.md
• docs/guides/pgpool/tls/configure_ssl.md
• docs/guides/pgpool/update-version/update_version.md
• docs/guides/pgpool/virtual_secret/guide.md

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch update-pgpool-docs-version

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