chore: remove redundant arg

Author: pythoninthegrass

{{cookiecutter.project_slug}}/docker-bake.hcl

@@ -53,7 +53,6 @@ target "arm64" {
   cache-to = ["type=gha,mode=max,scope=linux/arm64"]
   // Optional arm64-specific args
   args = {
-    PYTHON_VERSION = "3.12.10"
     OPENBLAS_NUM_THREADS = "1"
     MKL_NUM_THREADS = "1"
     NUMEXPR_NUM_THREADS = "1"