A collection of updates and build time flag adjustments

[ellie]

The goal here is to reduce the final binary size, and also reduce dependencies that we don't actually need to have included

Checks

• I am happy for maintainers to push small adjustments to this PR, to speed up the review cycle
• I have checked that there are no existing pull requests for the same thing

[greptile-apps]

Greptile Summary

This PR reduces binary size and trims unnecessary dependencies by upgrading axum (0.7→0.8), thiserror (1→2), stripping symbols in the dist profile, and narrowing minijinja's enabled features. The axum upgrade is handled correctly — async-trait is removed, FromRequestParts uses native async, and route parameter syntax is updated to the {param} style.

• Axum upgraded 0.7→0.8; async-trait removed; route params migrated to {param} syntax
• minijinja now built with default-features = false, features = ["builtins", "serde"]
• thiserror bumped to v2
• strip = "symbols" added to [profile.dist]

Important Files Changed

Filename	Overview
Cargo.toml	Updates thiserror to v2, disables minijinja default features (keeping builtins + serde), and adds symbol stripping to the dist profile for smaller binaries.
crates/atuin-server/Cargo.toml	Drops async-trait dependency and upgrades axum from 0.7 to 0.8, which now natively supports async trait methods.
crates/atuin-server/src/router.rs	Removes async_trait macro, updates route parameter syntax from :param to {param} for axum 0.8 compatibility.
Cargo.lock	Lock file updated to reflect axum 0.8.8, thiserror 2.0.18, matchit 0.8.4, and removal of axum 0.7 + axum-core 0.4 entries.

_{Last reviewed commit: aac93ef}