Bump github.com/modelcontextprotocol/go-sdk from 1.4.1 to 1.6.0

Bumps [github.com/modelcontextprotocol/go-sdk](https://github.com/modelcontextprotocol/go-sdk) from 1.4.1 to 1.6.0.
- [Release notes](https://github.com/modelcontextprotocol/go-sdk/releases)
- [Commits](https://github.com/modelcontextprotocol/go-sdk/compare/v1.4.1...v1.6.0)

---
updated-dependencies:
- dependency-name: github.com/modelcontextprotocol/go-sdk
  dependency-version: 1.6.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

go.mod

@@ -40,7 +40,7 @@ require (
 	github.com/julienschmidt/httprouter v1.3.0
 	github.com/kubecost/events v0.0.8
 	github.com/microcosm-cc/bluemonday v1.0.27
-	github.com/modelcontextprotocol/go-sdk v1.4.1
+	github.com/modelcontextprotocol/go-sdk v1.6.0
 	github.com/opencost/opencost/core v0.0.0-20250521155634-81d2b597d1bc
 	github.com/opencost/opencost/modules/collector-source v0.0.0-00010101000000-000000000000
 	github.com/opencost/opencost/modules/prometheus-source v0.0.0-00010101000000-000000000000
@@ -95,7 +95,7 @@ require (
 	github.com/go-playground/universal-translator v0.18.1 // indirect
 	github.com/go-viper/mapstructure/v2 v2.5.0 // indirect
 	github.com/gofrs/flock v0.13.0 // indirect
-	github.com/google/jsonschema-go v0.4.2 // indirect
+	github.com/google/jsonschema-go v0.4.3 // indirect
 	github.com/klauspost/crc32 v1.3.0 // indirect
 	github.com/leodido/go-urn v1.4.0 // indirect
 	github.com/minio/crc64nvme v1.1.1 // indirect

go.sum

@@ -259,8 +259,8 @@ github.com/google/go-cmp v0.5.4/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
 github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
 github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
 github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
-github.com/google/jsonschema-go v0.4.2 h1:tmrUohrwoLZZS/P3x7ex0WAVknEkBZM46iALbcqoRA8=
-github.com/google/jsonschema-go v0.4.2/go.mod h1:r5quNTdLOYEz95Ru18zA0ydNbBuYoo9tgaYcxEYhJVE=
+github.com/google/jsonschema-go v0.4.3 h1:/DBOLZTfDow7pe2GmaJNhltueGTtDKICi8V8p+DQPd0=
+github.com/google/jsonschema-go v0.4.3/go.mod h1:r5quNTdLOYEz95Ru18zA0ydNbBuYoo9tgaYcxEYhJVE=
 github.com/google/martian v2.1.0+incompatible h1:/CP5g8u/VJHijgedC/Legn3BAbAaWPgecwXBIDzw5no=
 github.com/google/martian v2.1.0+incompatible/go.mod h1:9I4somxYTbIHy5NJKHRl3wXiIaQGbYVAs8BPL6v8lEs=
 github.com/google/martian/v3 v3.3.3 h1:DIhPTQrbPkgs2yJYdXU/eNACCG5DVQjySNRNlflZ9Fc=
@@ -345,8 +345,8 @@ github.com/minio/minio-go/v7 v7.0.98 h1:MeAVKjLVz+XJ28zFcuYyImNSAh8Mq725uNW4beRi
 github.com/minio/minio-go/v7 v7.0.98/go.mod h1:cY0Y+W7yozf0mdIclrttzo1Iiu7mEf9y7nk2uXqMOvM=
 github.com/mitchellh/go-homedir v1.1.0 h1:lukF9ziXFxDFPkA1vsr5zpc1XuPDn/wFntq5mG+4E0Y=
 github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
-github.com/modelcontextprotocol/go-sdk v1.4.1 h1:M4x9GyIPj+HoIlHNGpK2hq5o3BFhC+78PkEaldQRphc=
-github.com/modelcontextprotocol/go-sdk v1.4.1/go.mod h1:Bo/mS87hPQqHSRkMv4dQq1XCu6zv4INdXnFZabkNU6s=
+github.com/modelcontextprotocol/go-sdk v1.6.0 h1:PPLS3kn7WtOEnR+Af4X5H96SG0qSab8R/ZQT/HkhPkY=
+github.com/modelcontextprotocol/go-sdk v1.6.0/go.mod h1:kzm3kzFL1/+AziGOE0nUs3gvPoNxMCvkxokMkuFapXQ=
 github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd h1:TRLaZ9cD/w8PVh93nsPXa1VrQ6jlwL5oN8l14QlcNfg=
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=