ci: add secrets: inherit to build workflow calls

Reusable workflows dont inherit secrets from caller by default.
secrets.BUILD_TOKEN was empty string, causing:
  ::error::Input required and not supplied: token

Added secrets: inherit to all 4 build workflow calls in ci.yml.

.gitea/workflows/ci.yml

@@ -70,24 +70,28 @@ jobs:
     needs: [server-core-test, device-agent-test, dashboard-test]
     runs-on: ubuntu-latest
     uses: ./.gitea/workflows/build_server_core.yaml
+    secrets: inherit
 
   build-device-agent:
     if: "!contains(gitea.ref_name, 'test')"
     needs: [server-core-test, device-agent-test, dashboard-test]
     runs-on: ubuntu-latest
     uses: ./.gitea/workflows/build_device_agent.yaml
+    secrets: inherit
 
   build-dashboard:
     if: "!contains(gitea.ref_name, 'test')"
     needs: [server-core-test, device-agent-test, dashboard-test]
     runs-on: ubuntu-latest
     uses: ./.gitea/workflows/build_dashboard.yaml
+    secrets: inherit
 
   build-docs:
     if: "!contains(gitea.ref_name, 'test')"
     needs: [server-core-test, device-agent-test, dashboard-test]
     runs-on: ubuntu-latest
     uses: ./.gitea/workflows/docs_call.yaml
+    secrets: inherit
 
   release:
     if: "!contains(gitea.ref_name, 'test')"