Bump github.com/modelcontextprotocol/go-sdk from 1.4.0 to 1.4.1

Bumps [github.com/modelcontextprotocol/go-sdk](https://github.com/modelcontextprotocol/go-sdk) from 1.4.0 to 1.4.1.
- [Release notes](https://github.com/modelcontextprotocol/go-sdk/releases)
- [Commits](https://github.com/modelcontextprotocol/go-sdk/compare/v1.4.0...v1.4.1)

---
updated-dependencies:
- dependency-name: github.com/modelcontextprotocol/go-sdk
  dependency-version: 1.4.1
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

go.mod

@@ -22,7 +22,7 @@ require (
 	github.com/go-chi/cors v1.2.2
 	github.com/jackc/pgx/v5 v5.8.0
 	github.com/jhillyerd/enmime v1.3.0
-	github.com/modelcontextprotocol/go-sdk v1.4.0
+	github.com/modelcontextprotocol/go-sdk v1.4.1
 	github.com/muesli/termenv v0.16.0
 	github.com/openai/openai-go v1.12.0
 	github.com/pdfcpu/pdfcpu v0.11.1
@@ -142,7 +142,7 @@ require (
 	github.com/prometheus/procfs v0.20.0 // indirect
 	github.com/russellhaering/goxmldsig v1.6.0 // indirect
 	github.com/segmentio/asm v1.1.3 // indirect
-	github.com/segmentio/encoding v0.5.3 // indirect
+	github.com/segmentio/encoding v0.5.4 // indirect
 	github.com/sosodev/duration v1.3.1 // indirect
 	github.com/spf13/cobra v1.10.2
 	github.com/spf13/pflag v1.0.10 // indirect