fix: run packer validate with access to the DO token

Without this, it fails when initializing the builder.

.github/workflows/lint.yml

@@ -47,6 +47,8 @@ jobs:
       - name: Run packer init
         run: "make image/init/digitalocean"
       - name: Run `packer validate`
+        env:
+          DIGITALOCEAN_TOKEN: ${{ secrets.DIGITALOCEAN_TOKEN }}
         run: "make image/validate/digitalocean"
 
   shellcheck:

.github/workflows/release.yml

@@ -90,6 +90,7 @@ jobs:
 
       - name: Run `packer validate`
         env:
+          DIGITALOCEAN_TOKEN: ${{ secrets.DIGITALOCEAN_TOKEN }}
           PKR_VAR_dokku_version: ${{ needs.release.outputs.version }}
         run: "make image/validate/digitalocean"