fix: add missing git author info in release-tag.yml

.github/workflows/release-tag.yml

@@ -16,11 +16,13 @@ jobs:
     - uses: actions/checkout@v4
       with:
         token: ${{ secrets.METANORMA_CI_PAT_TOKEN }}
-    - name: install xmllint
+
+    - name: Install xmllint
       run: |
         sudo apt-get update -y
         sudo apt-get install -y libxml2-utils
-    - name: update latexml.nuspec
+
+    - name: Update nuspec
       run: |
         xmllint --shell xml2rfc.nuspec << EOF
         setns ns=http://schemas.microsoft.com/packaging/2015/06/nuspec.xsd
@@ -29,8 +31,11 @@ jobs:
         save
         exit
         EOF
+
     - name: Push commit and tag
       run: |
+        git config --global user.name "metanorma-ci"
+        git config --global user.email "[email protected]"
         git add xml2rfc.nuspec
         git commit -m "Bump version to ${{ github.event.inputs.next_version }}"
         git tag v${{ github.event.inputs.next_version }}