Bump to v1.0.1 — fix ArtifactHub checksum

Bumps version to 1.0.1 and updates artifacthub-pkg.yml with the
correct archive URL for v1.0.1. The archive-checksum is intentionally
left blank so the release workflow can compute it after rebuilding the
tarball (fixes the v1.0.0 ordering bug fixed in PR #80).

Co-Authored-By: Paperclip <noreply@paperclip.ing>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "sealed-secrets",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "description": "Headlamp plugin for Bitnami Sealed Secrets - manage encrypted Kubernetes secrets",
   "files": [
     "dist",