Add dev certs feature to collection index (#715)

Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: Abdurrahmaan Iqbal <abdurriq@github.com>

Author: 3 people

_data/collection-index.yml

@@ -1546,3 +1546,8 @@
   contact: https://github.com/sjp/tectonic-feature/issues
   repository: https://github.com/sjp/tectonic-feature
   ociReference: ghcr.io/sjp/tectonic-feature
+- name: Dev Certs Feature by David Negstad
+  maintainer: dnegstad
+  contact: https://github.com/dnegstad/devcontainer-dev-certs/issues
+  repository: https://github.com/dnegstad/devcontainer-dev-certs
+  ociReference: ghcr.io/dnegstad/devcontainer-dev-certs