Bump ClosedXML from 0.95.4 to 0.104.1

Bumps [ClosedXML](https://github.com/ClosedXML/ClosedXML) from 0.95.4 to 0.104.1.
- [Release notes](https://github.com/ClosedXML/ClosedXML/releases)
- [Commits](ClosedXML/ClosedXML@0.95.4...0.104.1)

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

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

Author: dependabot[bot]

DigitalLearningSolutions.Data/DigitalLearningSolutions.Data.csproj

@@ -10,7 +10,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="ClosedXML" Version="0.95.4" />
+    <PackageReference Include="ClosedXML" Version="0.104.1" />
     <PackageReference Include="Dapper" Version="2.1.24" />
     <PackageReference Include="Dapper.FluentMap" Version="2.0.0" />
     <PackageReference Include="Freshdesk.Api" Version="0.13.6" />