Update init-pants action (py3.11 for pants-plugins)

Author: cognifloyd

.github/actions/init-pants/action.yaml

@@ -13,7 +13,7 @@ runs:
   using: "composite"
   steps:
     - name: Initialize Pants and its GHA caches
-      uses: pantsbuild/actions/init-pants@v9
+      uses: pantsbuild/actions/init-pants@v10
       # This action adds an env var to make pants use both pants.ci.toml & pants.toml.
       # This action also creates 3 GHA caches (1 is optional).
       # - `pants-setup` has the bootsrapped pants install