Bump to CPython 3.14.0a6 (#561)

Author: zanieb

cpython-unix/build-cpython.sh

@@ -448,9 +448,6 @@ if [ -n "${CPYTHON_OPTIMIZED}" ]; then
 
          if [[ -n "${PYTHON_MEETS_MINIMUM_VERSION_3_14}" ]]; then
             patch -p1 -i "${ROOT}/patch-jit-llvm-version-3.14.patch"
-            # On 3.14, we also use the tail calling interpreter which was incompatible with the JIT
-            # until https://github.com/python/cpython/pull/129820 — backport that
-            patch -p1 -i "${ROOT}/patch-jit-tail-call-compat-314-129820.patch"
         fi
     fi
 fi

cpython-unix/patch-jit-tail-call-compat-314-129820.patch

@@ -80,10 +80,10 @@
         "python_tag": "cp313",
     },
     "cpython-3.14": {
-        "url": "https://www.python.org/ftp/python/3.14.0/Python-3.14.0a5.tar.xz",
-        "size": 22859900,
-        "sha256": "74e83f26de1e4fb9eef1b56492cff92508834bb71ac13f5c580438ce9f093682",
-        "version": "3.14.0a5",
+        "url": "https://www.python.org/ftp/python/3.14.0/Python-3.14.0a6.tar.xz",
+        "size": 22956068,
+        "sha256": "8d6181e5331d9a2cd6ca405ae1230e88589a043f4768ebb443d3889d45c1c35c",
+        "version": "3.14.0a6",
         "licenses": ["Python-2.0", "CNRI-Python"],
         "license_file": "LICENSE.cpython.txt",
         "python_tag": "cp314",