chore(ci): Update rattler_build_variant_config digest to 1f78cfc

Author: renovate[bot]

Cargo.lock

@@ -249,7 +249,7 @@ rattler-build = { git = "https://github.com/prefix-dev/rattler-build", rev = "v0
 rattler_build_jinja = { git = "https://github.com/prefix-dev/rattler-build", rev = "v0.58.1" }
 rattler_build_recipe = { git = "https://github.com/prefix-dev/rattler-build", rev = "v0.58.1" }
 rattler_build_types = { git = "https://github.com/prefix-dev/rattler-build", rev = "v0.58.1" }
-rattler_build_variant_config = { git = "https://github.com/prefix-dev/rattler-build", rev = "v0.58.1" }
+rattler_build_variant_config = { git = "https://github.com/prefix-dev/rattler-build", rev = "1f78cfcbbff9d9c96a3bfb1b157a3101baa222a3" }
 
 [patch.crates-io]
 # This is a temporary patch to get `cargo vendor` to work with the `uv` and pep508_rs` crates.