Merge pull request #560 from rundeck/renovate/kramdown-2.x-lockfile

RUN-3144: chore(deps): update dependency kramdown to v2.5.1

Author: gschueler

docs/Gemfile.lock

@@ -37,7 +37,7 @@ GEM
       jekyll (>= 3.3, < 5.0)
     jekyll-watch (2.2.1)
       listen (~> 3.0)
-    kramdown (2.3.2)
+    kramdown (2.5.1)
       rexml
     kramdown-parser-gfm (1.1.0)
       kramdown (~> 2.0)
@@ -56,8 +56,8 @@ GEM
     rb-fsevent (0.11.1)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rexml (3.2.8)
-      strscan (>= 3.0.9)
+    rexml (3.3.6)
+      strscan
     rouge (3.28.0)
     safe_yaml (1.0.5)
     sassc (2.4.0)