Remove unnecessary filename input from taskfile schema download workflow step

The existing filename of the taskfile JSON schema as provided by the JSON Schema Store is perfectly fine (and the same as
the previous custom one anyway). The full path to the file is provided as an output from the download action. So
specifying the output filename for the download is unnecessary.

Author: per1234

.github/workflows/check-taskfiles.yml

@@ -40,7 +40,6 @@ jobs:
           # See: https://github.com/SchemaStore/schemastore/blob/master/src/schemas/json/taskfile.json
           file-url: https://json.schemastore.org/taskfile.json
           location: ${{ runner.temp }}/taskfile-schema
-          file-name: taskfile.json
 
       - name: Install JSON schema validator
         run: sudo npm install --global ajv-cli