build [dependabot]: bump Pulumi.Keycloak from 6.2.1 to 6.4.0

Bumps [Pulumi.Keycloak](https://github.com/pulumi/pulumi-keycloak) from 6.2.1 to 6.4.0.
- [Release notes](https://github.com/pulumi/pulumi-keycloak/releases)
- [Changelog](https://github.com/pulumi/pulumi-keycloak/blob/master/CHANGELOG_OLD.md)
- [Commits](pulumi/pulumi-keycloak@v6.2.1...v6.4.0)

---
updated-dependencies:
- dependency-name: Pulumi.Keycloak
  dependency-version: 6.4.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Directory.Packages.props

@@ -50,7 +50,7 @@
     <PackageVersion Include="OpenTelemetry.Instrumentation.Http" Version="1.11.0" />
     <PackageVersion Include="OpenTelemetry.Instrumentation.Runtime" Version="1.11.0" />
     <PackageVersion Include="OpenTelemetry.Instrumentation.SqlClient" Version="1.5.1-beta.1" />
-    <PackageVersion Include="Pulumi.Keycloak" Version="6.2.1" />
+    <PackageVersion Include="Pulumi.Keycloak" Version="6.4.0" />
     <PackageVersion Include="QueryKit" Version="1.5.0" />
     <PackageVersion Include="Riok.Mapperly" Version="4.1.1" />
     <PackageVersion Include="Scrutor" Version="6.0.1" />