Set dev workflow to checkout main branch

Signed-off-by: Justin Georgi <justin.georgi@gmail.com>

.gitea/workflows/dev-build.yaml

@@ -6,15 +6,5 @@ jobs:
   Build-PWA:
     runs-on: ubuntu-22.04
     steps:
-      - name: Build pwa
-        run: npm run build --prefix /home/mserver/ALVINN/ALVINN_f7/
-      - name: Clear previous dev pwa
-        run: |
-          rm -R /var/www/html/alvinn-dev/*
-          echo "Old files removed"
-      - name: Copy new dev pwa
-        run: |
-          cp -R /home/mserver/ALVINN/ALVINN_f7/www/* /var/www/html/alvinn-dev
-          echo "New files copied"
-      - name: Final Status
-        run: echo "This job's status is ${{ job.status }}."
+      - name: Check out repository code
+        uses: actions/checkout@v4