fix: more deprecations

.github/workflows/deploy-on-merge.yml

@@ -20,7 +20,7 @@ jobs:
     outputs:
       hosts: ${{ steps.discover.outputs.hosts }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Read hosts from inventory
         id: discover

.github/workflows/deploy.yml

@@ -56,7 +56,7 @@ jobs:
         host: ${{ fromJson(needs.prepare.outputs.hosts) }}
       fail-fast: false
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Set up Tailscale
         uses: tailscale/github-action@v4

.github/workflows/terraform.yml

@@ -53,7 +53,7 @@ jobs:
 
       - name: Upload plan
         if: github.event_name == 'push' && github.ref == 'refs/heads/main'
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: tfplan
           path: terraform/tfplan
@@ -66,10 +66,10 @@ jobs:
     runs-on: ubuntu-latest
     environment: production
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Install OpenTofu
-        uses: opentofu/setup-opentofu@v1
+        uses: opentofu/setup-opentofu@v2
         with:
           tofu_version: latest
 
@@ -99,7 +99,7 @@ jobs:
         run: tofu init
 
       - name: Download plan
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v8
         with:
           name: tfplan
           path: terraform/

.github/workflows/validate-terraform.yml

@@ -11,7 +11,7 @@ jobs:
       - uses: actions/checkout@v6
 
       - name: Install OpenTofu
-        uses: opentofu/setup-opentofu@v1
+        uses: opentofu/setup-opentofu@v2
         with:
           tofu_version: latest