Bump Sep from 0.11.5 to 0.12.0

---
updated-dependencies:
- dependency-name: Sep
  dependency-version: 0.12.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

src/Directory.Packages.props

@@ -9,7 +9,7 @@
     <PackageVersion Include="NUnit" Version="4.4.0" />
     <PackageVersion Include="NUnit3TestAdapter" Version="5.2.0" />
     <PackageVersion Include="ProjectDefaults" Version="1.0.162" />
-    <PackageVersion Include="Sep" Version="0.11.5" />
+    <PackageVersion Include="Sep" Version="0.12.0" />
     <PackageVersion Include="Verify" Version="31.7.2" />
     <PackageVersion Include="Verify.DiffPlex" Version="3.1.2" />
     <PackageVersion Include="Verify.NUnit" Version="31.7.2" />