ci: sparse checkout for action files in test workflow (#124)

* ci(test): only sparse checkout action files in action testing jobs

* refactor: rename `action.yml` config file to `action.yaml`

action.yml

@@ -1,55 +0,0 @@
-name: CMake Action
-description: Configure, build, and test your CMake project
-author: Alfi Maulana
-branding:
-  color: gray-dark
-  icon: terminal
-inputs:
-  source-dir:
-    description: The source directory of the CMake project
-    required: false
-  build-dir:
-    description: The build directory of the CMake project
-    required: false
-  generator:
-    description: The build system generator for the CMake project
-    required: false
-  c-compiler:
-    description: The preferred executable for compiling C language files
-    required: false
-  cxx-compiler:
-    description: The preferred executable for compiling C++ language files
-    required: false
-  c-flags:
-    description: Additional flags to pass when compiling C language files
-    required: false
-  cxx-flags:
-    description: Additional flags to pass when compiling C++ language files
-    required: false
-  options:
-    description: Additional options to pass during the CMake configuration
-    required: false
-  args:
-    description: Additional arguments to pass during the CMake configuration
-    required: false
-  run-build:
-    description: If enabled, it builds the project using CMake (true/false)
-    required: false
-    default: false
-  build-args:
-    description: Additional arguments to pass during the CMake build
-    required: false
-  run-test:
-    description: If enabled, it runs testing using CTest (true/false)
-    required: false
-    default: false
-  test-args:
-    description: Additional arguments to pass during the CTest run
-    required: false
-outputs:
-  build-dir:
-    description: The build directory of the CMake project
-    value: ${{ steps.process-inputs.outputs.build-dir }}
-runs:
-  using: node20
-  main: main/index.mjs