Bump Serilog from 3.1.0 to 3.1.1 in /src

Bumps [Serilog](https://github.com/serilog/serilog) from 3.1.0 to 3.1.1.
- [Release notes](https://github.com/serilog/serilog/releases)
- [Commits](serilog/serilog@v3.1.0...v3.1.1)

---
updated-dependencies:
- dependency-name: Serilog
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

src/Zily.csproj

@@ -36,7 +36,7 @@
     <ItemGroup>
     <PackageReference Include="Nerdbank.GitVersioning" Version="3.6.133" PrivateAssets="All" />
     <PackageReference Include="DotNet.ReproducibleBuilds" Version="1.1.1" PrivateAssets="All" />
-    <PackageReference Include="Serilog" Version="3.1.0" />
+    <PackageReference Include="Serilog" Version="3.1.1" />
     <PackageReference Include="System.ValueTuple" Version="4.5.0" />
     </ItemGroup>