feat(list): Add a step in the action to add version and commit info.

Add a step within the github action that adds both VERSION and COMMIT
info to the PSL list file. This fixes
publicsuffix/list#1808.

.github/workflows/deploy-site.yaml

@@ -41,6 +41,11 @@ jobs:
           repository: publicsuffix/list
           path: list
 
+      - name: Add VERSION and COMMIT to public_suffix_list.dat
+        working-directory: list/
+        run: |-
+          awk -v commithash="$(git rev-parse HEAD)" -v date="$(date -u +'%Y-%m-%d_%H-%M-%S_%Z')" 'NR==8{print "// VERSION: "date; print "// COMMIT: "commithash; print ""} { print }' public_suffix_list.dat > newlist.dat && mv newlist.dat public_suffix_list.dat
+
       - name: Authenticate with GCP
         uses: google-github-actions/auth@v0
         with: