ci: mark invalid files

Ref: neovim/neovim#30882

Author: MunifTanjim

.github/workflows/ci.yml

@@ -91,8 +91,14 @@ jobs:
             examples/luvit/**/*.lua
             examples/neovim/**/*.lua
             examples/xmake/**/*.lua
+            # FIXME: these fail to parse on Windows
+            !examples/lua/testes/api.lua
+            !examples/lua/testes/calls.lua
+            !examples/lua/testes/db.lua
           invalid-files: |-
             examples/neovim/test/functional/fixtures/lua/syntax_error.lua
+            # FIXME: neovim/neovim#30882
+            examples/neovim/runtime/lua/vim/_meta/vimfn.lua
 
   fuzz:
     runs-on: ubuntu-latest