Add IRanges package to workflow dependencies

Author: thackl

.github/workflows/main.yml

@@ -59,7 +59,8 @@ jobs:
           extra-packages: >
             any::rcmdcheck,
             any::Hmisc,
-            any::quantreg
+            any::quantreg,
+            any::IRanges
           needs: check
 
       - uses: r-lib/actions/check-r-package@v2