Bump actions/upload-artifact from 6 to 7 (#139)

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 6 to 7.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v6...v7)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/build.yaml

@@ -197,7 +197,7 @@ jobs:
         shell: cmd
         run: dir .\bin\*nupkg
 
-      - uses: actions/upload-artifact@v6
+      - uses: actions/upload-artifact@v7
         with:
           name: NetPDFNuGet
           path: .\bin\*nupkg

.github/workflows/generateclasses.yaml

@@ -192,7 +192,7 @@ jobs:
           key: PdfBox_FontCache_${{ env.PDFBox_Version }}
           path: ./fontcache/
 
-      - uses: actions/upload-artifact@v6
+      - uses: actions/upload-artifact@v7
         with:
           name: JNetReflector report
           path: .\JNetReflector.txt