Same PG container in all tests

[adamdickmeiss]

And wait 30 seconds to avoid testcontainer failures on
"fresh" systems.

[Copilot]

Pull request overview

Standardizes PostgreSQL testcontainers on PostgreSQL 16 and increases the Directory integration-test startup timeout.

Changes:

• Pins all testcontainer images to postgres:16.
• Raises the Directory database startup timeout to 30 seconds.

Reviewed changes

Copilot reviewed 15 out of 15 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
directory/test/00_integration_test.go	Pins PostgreSQL 16 and extends startup timeout.
broker/test/utils/utils.go	Pins the shared test helper to PostgreSQL 16.
broker/test/service/e2e_test.go	Pins the E2E database image.
broker/test/scheduler/service/scheduler_test.go	Pins scheduler service tests.
broker/test/scheduler/db/schedrepo_test.go	Pins scheduler repository tests.
broker/test/pullslip/api/api_handler_test.go	Pins pull-slip API tests.
broker/test/patron_request/db/prrepo_test.go	Pins patron-request repository tests.
broker/test/patron_request/api/api-handler_test.go	Pins patron-request API tests.
broker/test/handler/iso18626-handler_test.go	Pins ISO 18626 handler tests.
broker/test/events/eventbus_test.go	Pins event-bus tests.
broker/test/client/client_test.go	Pins client integration tests.
broker/test/catalog/holdings_test.go	Pins catalog holdings tests.
broker/test/api/api-handler_test.go	Pins broker API tests.
broker/cmd/broker/main_test.go	Pins broker command tests.
broker/cmd/archive/main_test.go	Pins archive command tests.

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[Copilot]

Pull request overview

Copilot reviewed 22 out of 25 changed files in this pull request and generated no new comments.