Use NUGET_* repo secrets for Gitea package publish auth.

.gitea/workflows/nuget-publish.yml

@@ -50,8 +50,8 @@ jobs:
       image: mcr.microsoft.com/dotnet/sdk:10.0
     env:
       GITHUB_TOKEN: ${{ github.token }}
-      GITEA_NUGET_USERNAME: ${{ secrets.GITEA_NUGET_USERNAME }}
-      GITEA_NUGET_TOKEN: ${{ secrets.GITEA_NUGET_TOKEN }}
+      NUGET_USERNAME: ${{ secrets.NUGET_USERNAME }}
+      NUGET_TOKEN: ${{ secrets.NUGET_TOKEN }}
     steps:
       - name: Checkout Repository
         run: |
@@ -85,8 +85,8 @@ jobs:
       - name: Configure Gitea NuGet Source
         run: |
           set -eu
-          USERNAME="${GITEA_NUGET_USERNAME:-${GITHUB_ACTOR}}"
-          TOKEN="${GITEA_NUGET_TOKEN:-${GITHUB_TOKEN:-}}"
+          USERNAME="${NUGET_USERNAME:-${GITHUB_ACTOR}}"
+          TOKEN="${NUGET_TOKEN:-${GITHUB_TOKEN:-}}"
 
           if [ -z "$TOKEN" ]; then
             echo "No token available for NuGet publish"