use refresh-lockfiles version (#69)

Author: bjlittle

.github/workflows/refresh-lockfiles.yml

@@ -14,5 +14,5 @@ on:
 
 jobs:
   refresh_lockfiles:
-    uses: scitools/workflows/.github/workflows/refresh-lockfiles.yml@main
-    secrets: inherit
+    uses: scitools/workflows/.github/workflows/refresh-lockfiles.yml@2023.03.0
+    secrets: inherit