CI: Update actions to latest versions, use default runner .NET version

.github/actions/download-artifact/action.yml

@@ -12,7 +12,7 @@ runs:
   using: "composite"
   steps:
     - name: Download Godot Artifact
-      uses: actions/download-artifact@v3
+      uses: actions/download-artifact@v4
       with:
         name: ${{ inputs.name }}
         path: ${{ inputs.path }}

.github/actions/godot-cache/action.yml

@@ -12,7 +12,7 @@ runs:
   steps:
     # Upload cache on completion and check it out now
     - name: Load .scons_cache directory
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: ${{inputs.scons-cache}}
         key: ${{inputs.cache-name}}-${{env.GODOT_BASE_BRANCH}}-${{github.ref}}-${{github.sha}}

.github/actions/godot-deps/action.yml

@@ -12,7 +12,7 @@ runs:
   steps:
     # Use python 3.x release (works cross platform)
     - name: Set up Python 3.x
-      uses: actions/setup-python@v4
+      uses: actions/setup-python@v5
       with:
         # Semantic version range syntax or exact version of a Python version
         python-version: ${{ inputs.python-version }}

.github/actions/upload-artifact/action.yml

@@ -12,7 +12,7 @@ runs:
   using: "composite"
   steps:
     - name: Upload Godot Artifact
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: ${{ inputs.name }}
         path: ${{ inputs.path }}