Update versions-manifest (actions#235)

Author: github-actions[bot]

versions-manifest.json

@@ -1,4 +1,49 @@
 [
+  {
+    "version": "3.12.0-beta.3",
+    "stable": false,
+    "release_url": "https://github.com/actions/python-versions/releases/tag/3.12.0-beta.3-5331639816",
+    "files": [
+      {
+        "filename": "python-3.12.0-beta.3-darwin-arm64.tar.gz",
+        "arch": "arm64",
+        "platform": "darwin",
+        "download_url": "https://github.com/actions/python-versions/releases/download/3.12.0-beta.3-5331639816/python-3.12.0-beta.3-darwin-arm64.tar.gz"
+      },
+      {
+        "filename": "python-3.12.0-beta.3-darwin-x64.tar.gz",
+        "arch": "x64",
+        "platform": "darwin",
+        "download_url": "https://github.com/actions/python-versions/releases/download/3.12.0-beta.3-5331639816/python-3.12.0-beta.3-darwin-x64.tar.gz"
+      },
+      {
+        "filename": "python-3.12.0-beta.3-linux-20.04-x64.tar.gz",
+        "arch": "x64",
+        "platform": "linux",
+        "platform_version": "20.04",
+        "download_url": "https://github.com/actions/python-versions/releases/download/3.12.0-beta.3-5331639816/python-3.12.0-beta.3-linux-20.04-x64.tar.gz"
+      },
+      {
+        "filename": "python-3.12.0-beta.3-linux-22.04-x64.tar.gz",
+        "arch": "x64",
+        "platform": "linux",
+        "platform_version": "22.04",
+        "download_url": "https://github.com/actions/python-versions/releases/download/3.12.0-beta.3-5331639816/python-3.12.0-beta.3-linux-22.04-x64.tar.gz"
+      },
+      {
+        "filename": "python-3.12.0-beta.3-win32-x64.zip",
+        "arch": "x64",
+        "platform": "win32",
+        "download_url": "https://github.com/actions/python-versions/releases/download/3.12.0-beta.3-5331639816/python-3.12.0-beta.3-win32-x64.zip"
+      },
+      {
+        "filename": "python-3.12.0-beta.3-win32-x86.zip",
+        "arch": "x86",
+        "platform": "win32",
+        "download_url": "https://github.com/actions/python-versions/releases/download/3.12.0-beta.3-5331639816/python-3.12.0-beta.3-win32-x86.zip"
+      }
+    ]
+  },
   {
     "version": "3.12.0-beta.2",
     "stable": false,