bump actions cache

Author: grlloyd

.github/workflows/check-bioc.yml

@@ -38,7 +38,7 @@ env:
   run_covr: 'false'
   run_pkgdown: 'true'
   has_RUnit: 'false'
-  cache-version: 'cache-v1'
+  cache-version: 'cache-v2'
   run_docker: 'false'
 
 jobs: