fix(deps): update river monorepo to v0.45.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
github.com/riverqueue/river	v0.44.1 → v0.45.0
github.com/riverqueue/river/cmd/river	v0.44.1 → v0.45.0
github.com/riverqueue/river/riverdriver/riverpgxv5	v0.44.1 → v0.45.0
github.com/riverqueue/river/rivertype	v0.44.1 → v0.45.0

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Release Notes

riverqueue/river (github.com/riverqueue/river)

v0.45.0

Compare Source

Changed

• Upgrade supported Go versions to 1.26 and 1.27. PR #​1356.

Fixed

• Fixed periodic jobs advancing their durable next run time when job insertion fails. PR #​1359.
• Improved SQLite queue count performance on large job tables by limiting counts to available and running jobs so the existing state and queue index can be used. PR #​1360.

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⚠️ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

♻ Renovate will retry this branch, including artifacts, only when one of the following happens:

• any of the package files in this branch needs updating, or
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The artifact failure details are included below:

File name: go.sum

Command failed: go mod vendor
go: github.com/riverqueue/river/cmd/river: missing go.sum entry for module providing package github.com/riverqueue/river/cmd/river; to add:
	go mod download github.com/riverqueue/river/cmd/river