[main] Bump Swashbuckle.AspNetCore in /eng/dependabot/independent

Bumps [Swashbuckle.AspNetCore](https://github.com/domaindrivendev/Swashbuckle.AspNetCore) from 7.2.0 to 8.1.1.
- [Release notes](https://github.com/domaindrivendev/Swashbuckle.AspNetCore/releases)
- [Commits](domaindrivendev/Swashbuckle.AspNetCore@v7.2.0...v8.1.1)

---
updated-dependencies:
- dependency-name: Swashbuckle.AspNetCore
  dependency-version: 8.1.1
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

eng/dependabot/independent/Versions.props

@@ -14,7 +14,7 @@
     <!-- Third-party references -->
     <NewtonsoftJsonVersion>13.0.3</NewtonsoftJsonVersion>
     <NJsonSchemaVersion>11.0.0</NJsonSchemaVersion>
-    <SwashbuckleAspNetCoreVersion>7.2.0</SwashbuckleAspNetCoreVersion>
+    <SwashbuckleAspNetCoreVersion>8.1.1</SwashbuckleAspNetCoreVersion>
     <AwsSdkS3Version>3.7.305.7</AwsSdkS3Version>
     <AwsSdkSecurityTokenVersion>3.7.300.33</AwsSdkSecurityTokenVersion>