CI: nudge

Author: wrengr

.github/workflows/ci.yml

@@ -39,7 +39,7 @@ jobs:
         - os: macOS-latest
           ghc: 'latest'
     steps:
-    - uses: actions/checkout@v2.4.0
+    - uses: actions/checkout@v3
     - uses: haskell/actions/[email protected]
       id: setup-haskell-cabal
       with: