ci: ensure release-plz tag format

Author: robjtede

.release-plz.toml

@@ -4,4 +4,5 @@ dependencies_update = false
 pr_draft = true
 pr_labels = ["release"]
 publish_all_features = true
+git_tag_name = "{{ package }}-v{{ version }}"
 git_release_name = "{{ package }}: v{{ version }}"