Cargo.toml: Fix repository URL to point to bootc-dev/jsonrpc-fdpass

The repository field was still pointing to the old cgwalters/spec-json-rpc-fdpass
location.

Assisted-by: OpenCode (Claude Opus 4)
Signed-off-by: Colin Walters <walters@verbum.org>

Author: cgwalters

Cargo.toml

@@ -5,7 +5,7 @@ edition = "2024"
 description = "JSON-RPC 2.0 with Unix file descriptor passing"
 authors = ["Colin Walters <walters@verbum.org>"]
 license = "MIT OR Apache-2.0"
-repository = "https://github.com/cgwalters/spec-json-rpc-fdpass"
+repository = "https://github.com/bootc-dev/jsonrpc-fdpass"
 
 [lints.rust]
 unexpected_cfgs = { level = "warn", check-cfg = ['cfg(kani)'] }