Update 3.12-rc to 3.12.0rc1, pip 23.2.1

Author: docker-library-bot

3.12-rc/alpine3.17/Dockerfile

@@ -52,7 +52,7 @@
       "version": "https://github.com/pypa/get-pip/commit/9af82b715db434abb94a0a6f3569f43e72157346"
     },
     "pip": {
-      "version": "23.1.2"
+      "version": "23.2.1"
     },
     "variants": [
       "bookworm",
@@ -64,7 +64,7 @@
       "windows/windowsservercore-ltsc2022",
       "windows/windowsservercore-1809"
     ],
-    "version": "3.12.0b4"
+    "version": "3.12.0rc1"
   },
   "3.7": {
     "get-pip": {