modify get merge and set git config of job

.forgejo/workflows/exploit-db-pull-and-sync.yaml

@@ -20,7 +20,9 @@ jobs:
 
       - name: Mirror ExploitDB Repository
         run: |
+          git config --global user.name 'bpmcdevitt action'
+          git config --global user.email 'brendan@mcdevitt.tech'
           git remote add exploitdb https://gitlab.com/exploit-database/exploitdb.git 
           git fetch exploitdb main
-          git merge exploitdb/main
+          git merge --allow-unrelated-histories exploitdb/main
           git push origin main