Add COMPATHELPER_PRIV to CompatHelper

Author: giordano

.github/workflows/CompatHelper.yml

@@ -15,6 +15,7 @@ jobs:
       - name: Pkg.add("CompatHelper")
         run: julia -e 'using Pkg; Pkg.add("CompatHelper")'
       - name: CompatHelper.main()
+        run: julia --color=yes -e 'using CompatHelper; CompatHelper.main()'
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        run: julia -e 'using CompatHelper; CompatHelper.main()'
+          COMPATHELPER_PRIV: ${{ secrets.DOCUMENTER_KEY }}