chore: tidy git-cliff output and limit to latest tag

Author: ruphy

.gitcliff.toml

@@ -10,6 +10,9 @@ body = """
 ## Release {{ version }}
 {% if date %}_{{ date }}_{% endif %}
 
+{% if commits | length == 0 %}
+No notable changes.
+{% else %}
 ### Highlights
 {% for group, commits in commits | group_by(attribute="type") %}
 #### {{ group | default(value="other") | upper }}
@@ -21,8 +24,10 @@ body = """
 
 ### Contributors
 {% for author, commits in commits | group_by(attribute="author") %}
-- {{ author }} ({{ commits | length }} commit{% if commits | length > 1 %}s{% endif %})
+{% set author_name = author.name | default(value=author.email | default(value=author)) %}
+- {{ author_name }} ({{ commits | length }} commit{% if commits | length > 1 %}s{% endif %})
 {% endfor %}
+{% endif %}
 """
 
 group_by = ["type"]

.github/workflows/release.yml

@@ -118,7 +118,7 @@ jobs:
           echo "$HOME/.cargo/bin" >> $GITHUB_PATH
 
       - name: Generate changelog from git history
-        run: git-cliff --config .gitcliff.toml --tag ${{ steps.tag.outputs.VERSION }} --output release-notes.md
+        run: git-cliff --config .gitcliff.toml --latest --output release-notes.md
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}