fix(com/grid-comp/markdown): pin remark-gfm to v3 to allow inline code block by backticks in Markdown (#32420)

Signed-off-by: hainenber <dotronghai96@gmail.com>

.github/dependabot.yml

@@ -322,6 +322,10 @@ updates:
 
   - package-ecosystem: "npm"
     directory: "/superset-frontend/packages/superset-ui-core/"
+    ignore:
+      # not until React >= 18.0.0
+      - dependency-name: "react-markdown"
+      - dependency-name: "remark-gfm"
     schedule:
       interval: "monthly"
     labels: