ci: fix cache

Author: clason

.github/workflows/test.yml

@@ -47,13 +47,12 @@ jobs:
           ref: main
           path: ${{ env.NVIM_TS_DIR }}
 
-      # FIXME: cache not functioning because of wrong key.
       - name: Setup Parsers Cache
         id: parsers-cache
         uses: actions/cache@v4
         with:
           path: ~/.local/share/nvim/site/parser/
-          key: parsers-${{ hashFiles('parsers.lua') }}
+          key: parsers-${{ hashFiles('.test-deps/nvim-treesitter/lua/nvim-treesitter/parsers.lua') }}
 
       - name: Compile parsers
         if: steps.parsers-cache.outputs.cache-hit != 'true'