Update sqlx requirement from 0.7 to 0.8 in the cargo group

Updates the requirements on [sqlx](https://github.com/launchbadge/sqlx) to permit the latest version.

Updates `sqlx` to 0.8.2
- [Changelog](https://github.com/launchbadge/sqlx/blob/main/CHANGELOG.md)
- [Commits](launchbadge/sqlx@v0.7.0...v0.8.2)

---
updated-dependencies:
- dependency-name: sqlx
  dependency-type: direct:production
  dependency-group: cargo
...

Signed-off-by: dependabot[bot] <[email protected]>

Cargo.toml

@@ -128,7 +128,7 @@ tokio-cron-scheduler = { version = "0.11.0", features = ["signal"] }
 english-to-cron = { version = "0.1.2" }
 
 # bg_pg: postgres workers
-sqlx = { version = "0.7", default-features = false, features = [
+sqlx = { version = "0.8", default-features = false, features = [
     "postgres",
 ], optional = true }
 ulid = { version = "1", optional = true }