remove py 3.12 from matrix

TorchServe blocks the build.
We can get 3.12 back when this PR upstream is merged: pytorch/serve#3332

Author: fabridamicelli

.github/workflows/build-and-push.yaml

@@ -68,7 +68,7 @@ jobs:
        fail-fast: false
        matrix:
          device: ['cpu', 'gpu']
-         python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
+         python-version: ["3.8", "3.9", "3.10", "3.11"]
      steps:
        - uses: actions/checkout@v4