Workaround ghostscript vunerablilty protection

.github/workflows/tests.yml

@@ -75,6 +75,10 @@ jobs:
         with:
           name: rb-cv.pdf
           path: ./
+      - name: Workaround ghostscript vunerability protection
+        # A vunerabillty that existed in ghostscript no longer exists.  This is to work around the temporary protection
+        # that was put in place.
+        # https://stackoverflow.com/questions/52998331/imagemagick-security-policy-pdf-blocking-conversion
+        run: sed -i '/disable ghostscript format types/,+6d' /etc/ImageMagick-6/policy.xml 
       - name: Run convert command 
-        run: cat /etc/ImageMagick-6/policy.xml
         run: convert -density 700 -resize 10% -append -quality 98 -alpha remove rb-cv.pdf rb-cv-thumbnail-p1.jpg