Fix variable insertion (properly) and git identity

.github/workflows/release.yml

@@ -37,10 +37,10 @@ jobs:
         run: |
           cd OneLifeData7
           old_version=$(git describe --tags --abbrev=0 --match="2HOL_v[0-9]*")
-          echo "new_version=$($oldVersion + 1)" >> $GITHUB_ENV
+          echo "new_version=$($old_version + 1)" >> $GITHUB_ENV
           echo -n "$new_version" > dataVersionNumber.txt
 
-      - name: Commit and tag version - OneLifeData7 #TODO does this order work?
+      - name: Commit and tag version - OneLifeData7
         uses: EndBug/add-and-commit@v9
         with:
           cwd: OneLifeData7/
@@ -51,5 +51,7 @@ jobs:
 
       - name: Tag version - OneLife
         run: |
+          git -C OneLife/ config user.name "github-actions"
+          git -C OneLife/ config user.email "41898282+github-actions[bot]@users.noreply.github.com"
           git -C OneLife/ tag ${{ env.tag_prefix }}${{ env.new_version }} -m "Tag automatically generated by GHA update script."
           git -C OneLife/ push origin --tags