.Net: Update PackageValidationBaselineVersion (#4663)

### Motivation and Context

update PackageValidationBaselineVersion to `1.1.0` in case of breaking
changes compared to `1.1.0`

### Contribution Checklist

<!-- Before submitting this PR, please make sure: -->

- [ ] The code builds clean without any errors or warnings
- [ ] The PR follows the [SK Contribution
Guidelines](https://github.com/microsoft/semantic-kernel/blob/main/CONTRIBUTING.md)
and the [pre-submission formatting
script](https://github.com/microsoft/semantic-kernel/blob/main/CONTRIBUTING.md#development-scripts)
raises no violations
- [ ] All unit tests pass, and I have added new tests where possible
- [ ] I didn't break anyone 😄

dotnet/nuget/nuget-package.props

@@ -10,7 +10,7 @@
     <IsPackable>true</IsPackable>
 
     <!-- Package validation. Baseline Version should be lower than current version. -->
-    <PackageValidationBaselineVersion>1.0.1</PackageValidationBaselineVersion>
+    <PackageValidationBaselineVersion>1.1.0</PackageValidationBaselineVersion>
     <!-- Validate assembly attributes only for Publish builds -->
     <NoWarn Condition="'$(Configuration)' != 'Publish'">$(NoWarn);CP0003</NoWarn>
     <!-- Do not validate reference assemblies -->