clnrest: do not install dependencies from git url

This reverts [commit](cd1ec7216b), as an alternative fix has already been introduced in PR [#8547](https://github.com/ElementsProject/lightning/pull/8547) to restore reproducible builds.

This reversion is necessary because otherwise Docker image building will fail with GitHub Actions or via build-release.sh. The issue arises from Cargo’s inability to resolve the git URL dependencies for clnrest’s utoipa and utoipa-swagger-ui packages within these build contexts. While direct `docker buildx` commands succeeds, Github Action or build-release.sh modifies the build context in a way that prevents Cargo from locating the specific git commit for these dependencies.

References:
https://github.com/ElementsProject/lightning/pull/8530#issuecomment-3248713576
https://github.com/ElementsProject/lightning/actions/runs/17435823432
Added fixed SOURCE_DATE_EPOCH flag for reproducible ubuntu builds [8547](https://github.com/ElementsProject/lightning/pull/8547)

Changelog-None.

plugins/rest-plugin/Cargo.toml

@@ -26,12 +26,11 @@ rcgen = "0.13"
 hyper = "1"
 tower= "0.5"
 tower-http = { version = "0.6", features = ["cors", "set-header"] }
-utoipa = { git = "https://github.com/rustyrussell/utoipa.git", features = ['axum_extras'] }
+utoipa = { version = "5", features = ['axum_extras'] }
 
 log-panics = "2"
 socketioxide = "0.15"
 
 cln-plugin = { version = "0.5", path = "../../plugins" }
 cln-rpc = { version = "0.5", path = "../../cln-rpc" }
-utoipa-swagger-ui = { git = "https://github.com/rustyrussell/utoipa.git", features = ["vendored", "axum"] }
-
+utoipa-swagger-ui = { version = "9.0.0", features = ["vendored", "axum"] }