fix(server): missing root cert (#14970)

#### PR Dependency Tree


* **PR #14970** 👈

This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)

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## Summary by CodeRabbit

* **Chores**
* Updated TLS library dependencies with pinned version constraints
across multiple packages
* Removed `tls-rustls` feature from sqlx configurations in backend and
frontend packages
  * Removed unused `sqlx` dependency from mobile native package
* Refined HTTPS client configuration with embedded certificate roots and
added validation test

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packages/frontend/mobile-native/Cargo.toml

@@ -22,7 +22,6 @@ affine_nbstore = { workspace = true }
 anyhow         = { workspace = true }
 base64-simd    = { workspace = true }
 chrono         = { workspace = true }
-sqlx           = { workspace = true }
 thiserror      = { workspace = true }
 tokio          = { workspace = true, features = ["rt-multi-thread"] }
 uniffi         = { workspace = true, features = ["cli", "tokio"] }