chore: Bump github.com/pb33f/libopenapi from 0.25.3 to 0.25.6 (#3621)

Bumps [github.com/pb33f/libopenapi](https://github.com/pb33f/libopenapi) from 0.25.3 to 0.25.6.
- [Release notes](https://github.com/pb33f/libopenapi/releases)
- [Commits](pb33f/libopenapi@v0.25.3...v0.25.6)

---
updated-dependencies:
- dependency-name: github.com/pb33f/libopenapi
  dependency-version: 0.25.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

go.mod

@@ -25,7 +25,7 @@ require (
 	github.com/jarcoal/httpmock v1.4.1
 	github.com/mongodb-forks/digest v1.1.0
 	github.com/mongodb/atlas-sdk-go v1.0.1-0.20250825084037-c95a65f18752
-	github.com/pb33f/libopenapi v0.25.3
+	github.com/pb33f/libopenapi v0.25.8
 	github.com/sebdah/goldie/v2 v2.7.1
 	github.com/spf13/cast v1.9.2
 	github.com/stretchr/testify v1.11.0

go.sum

@@ -1215,8 +1215,8 @@ github.com/onsi/gomega v1.34.1 h1:EUMJIKUjM8sKjYbtxQI9A4z2o+rruxnzNvpknOXie6k=
 github.com/onsi/gomega v1.34.1/go.mod h1:kU1QgUvBDLXBJq618Xvm2LUX6rSAfRaFRTcdOeDLwwY=
 github.com/openlyinc/pointy v1.1.2 h1:LywVV2BWC5Sp5v7FoP4bUD+2Yn5k0VNeRbU5vq9jUMY=
 github.com/openlyinc/pointy v1.1.2/go.mod h1:w2Sytx+0FVuMKn37xpXIAyBNhFNBIJGR/v2m7ik1WtM=
-github.com/pb33f/libopenapi v0.25.3 h1:B0rf9Reo63tAx54gpoP9778Y84gk3JQoFtj7yg8vKfo=
-github.com/pb33f/libopenapi v0.25.3/go.mod h1:IefJDi7uJpflLs2wEnkiier/Y21w+dEbOrMCP5LB2aw=
+github.com/pb33f/libopenapi v0.25.8 h1:vA6NZAu6YClmpf4oceqdHowUkeOp79CODXGZAukhxQQ=
+github.com/pb33f/libopenapi v0.25.8/go.mod h1:3MKMFLcYAnTgOuueDd2HIidMphtHHAhPdspgjKVVFq8=
 github.com/pb33f/ordered-map/v2 v2.2.0 h1:+6D6e0nkcEjVPh6kF48ynz2Cb+D/ECH/Q3AOunHtj7E=
 github.com/pb33f/ordered-map/v2 v2.2.0/go.mod h1:rAwLzJPAha8J3pY5otLGRbGH2L077wij3W/ftbgPwNs=
 github.com/phpdave11/gofpdf v1.4.2/go.mod h1:zpO6xFn9yxo3YLyMvW8HcKWVdbNqgIfOOp2dXMnm1mY=