ci: fix incorrect path for bom

.gitea/workflows/server.yaml

@@ -67,7 +67,7 @@ jobs:
           dotnet tool install --global CycloneDX
       - name: Generate SBOM
         run: |
-          dotnet CycloneDX Server/Server.csproj -o bom.xml
+          dotnet CycloneDX Server/Server.csproj -o .
       - name: Upload SBOM
         uses: https://github.com/DependencyTrack/gh-upload-sbom@v2.0.1
         with:
@@ -76,4 +76,4 @@ jobs:
           projectName: ${{ secrets.DEPENDENCY_TRACK_PROJECT_NAME }}
           autoCreate: true
           projectVersion: ${GITHUB_REF_NAME}
-          bomFilename: bom.xml
+          bomFilename: "${{ github.workspace }}/bom.xml"