build(deps): Bump blinklabs-io/cardano-configs (#19)

Bumps [blinklabs-io/cardano-configs](https://github.com/blinklabs-io/docker-cardano-configs) from 20250518-1 to 20250618-1.
- [Release notes](https://github.com/blinklabs-io/docker-cardano-configs/releases)
- [Commits](blinklabs-io/docker-cardano-configs@v20250518-1...v20250618-1)

---
updated-dependencies:
- dependency-name: blinklabs-io/cardano-configs
  dependency-version: 20250618-1
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Dockerfile

@@ -8,7 +8,7 @@ RUN echo "Building tags/${MITHRIL_VERSION}..." \
     && git checkout tags/${MITHRIL_VERSION} \
     && cargo build --release -p mithril-signer
 
-FROM ghcr.io/blinklabs-io/cardano-configs:20250518-1 AS cardano-configs
+FROM ghcr.io/blinklabs-io/cardano-configs:20250618-1 AS cardano-configs
 
 FROM debian:bookworm-slim AS mithril-signer
 COPY --from=rustbuilder /code/mithril/target/release/mithril-signer /bin/