chore: bump subquery node to v1.19.1

[Jonathansumner]

Update the base image for subquery-node

• Removes conflicting support for signoz/open-telemetry
• Added script to postgres image which enables historical-mode indexing
• Removed bash optimisation command which causes build issues, bash strip

---

Code Review Checklist (to be filled out by reviewer)

• [ ] Description accurately reflects what changes are being made.
• [ ] Either the PR references an issue (via the "Development" combobox) or the description explains the need for the changes.
• [ ] The PR appropriately sized.
• [ ] The PR contains an idempotent DB migration.
• [ ] I have verified the correctness of the DB migration using relevant data (e.g. test-generated data).
• [ ] New code has enough tests.
• [ ] New code has enough documentation to answer "how do I use it?" and "what does it do?".
• [ ] Existing documentation is up-to-date, if impacted.