Updates PG server + PostGIS + pgbackrest + system_stats versions

[maqeel75]

• Updates new PG server 16.15, 17.11 and 18.6
• Updates PostGIS to 3.6.4
• Updates system_stats to 4.0
• Updates pgbackrest to 2.59.0

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 54293e96-61ee-4575-8e64-ca1d5f59fa26

📥 Commits

Reviewing files that changed from the base of the PR and between e4ac4bb and aeac569.

📒 Files selected for processing (1)

• scripts/build_pgedge_images.py

💤 Files with no reviewable changes (1)

• scripts/build_pgedge_images.py

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📝 Walkthrough

Walkthrough

The change updates PostgreSQL package manifests for versions 16.15, 17.11, and 18.6 across AMD64 and ARM64. Standard manifests update PostGIS, pgBackRest, and system_stats. Image definitions and the changelog record the release updates.

Changes

Image package refresh

Layer / File(s)	Summary
Package manifest updates packagelists/amd64/*, packagelists/arm64/*	Minimal and standard manifests update PostgreSQL 16, 17, and 18 packages. Standard manifests also update PostGIS, pgBackRest, and system_stats.
Image matrix and release notes scripts/build_pgedge_images.py, CHANGELOG.md	Image definitions use PostgreSQL 16.15, 17.11, and 18.6. Spock 6 epochs change from 2 to 1. The changelog records the upgrades.

Poem

I nudge each package line,
PostgreSQL versions align.
PostGIS and backups hop ahead,
System stats are freshly fed.
A rabbit thumps a bright release sign!

Mergeability Score: ⚪ Minimal · up to aeac5

This PR updates PostgreSQL and related package versions without any identified merge-blocking issue; it is merge-ready after normal checks and review.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description check	✅ Passed	The description directly summarizes the PostgreSQL, PostGIS, system_stats, and pgBackRest version updates.
Title check	✅ Passed	The title clearly summarizes the main version updates for PostgreSQL, PostGIS, pgBackRest, and system_stats.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch aug-pg-updates

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[codacy-production]

Up to standards ✅

🟢 Issues 0 issues

Results:
0 new issues

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🟢 Metrics 0 complexity · 0 duplication

Metric	Results
Complexity	0
Duplication	0

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