chore: Deduplicate checkout steps

.gitea/workflows/actions.yaml

@@ -2,11 +2,25 @@ name: Container & Helm chart
 on: [push]
 
 jobs:
-  Semantic Release (Dry-run):
-    runs-on: dind-rootless
+  Checkout:
+    runs-on: dind
     steps:
       - name: Check out repository code
         uses: actions/checkout@v3
+      - name: Store repository as artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: source
+          path: |
+            .
+  Semantic Release (Dry-run):
+    runs-on: dind-rootless
+    needs: Checkout
+    steps:
+      - name: Download repository
+        uses: actions/download-artifact@v4
+        with:
+          name: source
       - name: Setup Node
         uses: actions/setup-node@v3
         with:
@@ -43,8 +57,10 @@ jobs:
     runs-on: dind
     needs: Semantic Release (Dry-run)
     steps:
-      - name: Checkout
-        uses: actions/checkout@v4
+      - name: Download repository
+        uses: actions/download-artifact@v4
+        with:
+          name: source
       - name: Kaniko build
         uses: aevea/action-kaniko@master
         with:
@@ -60,8 +76,10 @@ jobs:
     needs: Semantic Release (Dry-run)
 
     steps:
-      - name: Checkout
-        uses: actions/checkout@v4
+      - name: Download repository
+        uses: actions/download-artifact@v4
+        with:
+          name: source
       - name: Inject semantic release version
         run: |
           sed -i 's/{{ chart_version }}/'${{ steps.sem_rel.outputs.version }}'/g' charts/spamasaurusrex/Chart.yaml