Update gitea-ci

.gitea/workflows/gitea-ci.yml

@@ -1,6 +1,3 @@
-stages:
-  - build
-
 variables:
   DOTNET_CLI_TELEMETRY_OPTOUT: "1"
   DOTNET_SKIP_FIRST_TIME_EXPERIENCE: "1"
@@ -8,6 +5,7 @@ variables:
 before_script:
   - apt-get update && apt-get install -y tar
 
+jobs:
   build:
     stage: build
     image: mcr.microsoft.com/dotnet/sdk:8.0