fix: bump PdfPig from 0.1.8 to 0.1.9 in the dependencies group

Bumps the dependencies group with 1 update: [PdfPig](https://github.com/UglyToad/PdfPig).


Updates `PdfPig` from 0.1.8 to 0.1.9
- [Release notes](https://github.com/UglyToad/PdfPig/releases)
- [Commits](UglyToad/PdfPig@v0.1.8...v0.1.9)

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

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

src/FileCurator/FileCurator.csproj

@@ -50,7 +50,7 @@
     <PackageReference Include="DocumentFormat.OpenXml" Version="3.1.0" />
     <PackageReference Include="HtmlAgilityPack" Version="1.11.67" />
     <PackageReference Include="MimeKit" Version="4.8.0" />
-    <PackageReference Include="PdfPig" Version="0.1.8" />
+    <PackageReference Include="PdfPig" Version="0.1.9" />
     <PackageReference Include="System.IO.FileSystem" Version="4.3.0" />
     <PackageReference Include="System.Net.Requests" Version="4.3.0" />
     <PackageReference Include="System.Threading.Tasks.Parallel" Version="4.3.0" />