fix(deps): bump rustls to 0.23.45 for TLS handshake advisory

[mattenarle10]

Summary

• bump rustls 0.23.40 → 0.23.45 and rustls-webpki 0.103.13 → 0.103.15 in src-tauri/Cargo.lock
• resolves the open Dependabot alert for rustls (TLS 1.3 handshake messages accepted across encryption level boundaries, fixed in 0.23.45); Dependabot's own update kept failing because it could only resolve 0.23.43 without also moving rustls-webpki

Verification

• cargo check --release --manifest-path src-tauri/Cargo.toml
• bun run tauri build --no-bundle