;ci: use --pedantic on windows too

.github/workflows/windows-nightly.yml

@@ -139,7 +139,8 @@ jobs:
 
     - name: Build hledger executables
       run: |
-        stack --no-terminal install --ghc-options=-Werror
+        stack --no-terminal install --pedantic
+      # --ghc-options=-Werror
 
     # run hledger-lib/hledger functional tests, skipping the ones for addons
     #- COLUMNS=80 stack exec -- shelltest --execdir -j16 tests -x /bin -x /addons