chore: set v1.56.0

Update Playwright.NET version to 1.56.0 to align with upstream Playwright driver.
This includes bumping AssemblyVersion and DriverVersion to 1.56.0.

Author: lucassc

src/Common/Version.props

@@ -1,8 +1,8 @@
 <Project>
   <PropertyGroup>
-    <AssemblyVersion>1.55.0</AssemblyVersion>
+    <AssemblyVersion>1.56.0</AssemblyVersion>
     <PackageVersion>$(AssemblyVersion)</PackageVersion>
-    <DriverVersion>1.56.1</DriverVersion>
+    <DriverVersion>1.56.0</DriverVersion>
     <ReleaseVersion>$(AssemblyVersion)</ReleaseVersion>
     <FileVersion>$(AssemblyVersion)</FileVersion>
     <NoDefaultExcludes>true</NoDefaultExcludes>