chore(deps): update debian:bullseye-slim docker digest to 75e0b7a

Author: renovate-sh-app[bot]

Dockerfile

@@ -17,7 +17,7 @@ COPY . .
 RUN go build -o mcp-grafana ./cmd/mcp-grafana
 
 # Final stage
-FROM debian:bullseye-slim@sha256:52927eff8153b563244f98cdc802ba97918afcdf67f9e4867cbf1f7afb3d147b
+FROM debian:bullseye-slim@sha256:75e0b7a6158b4cc911d4be07d9f6b8a65254eb8c58df14023c3da5c462335593
 
 LABEL io.modelcontextprotocol.server.name="io.github.grafana/mcp-grafana"