downloads: upgrade CPython 3.7 to 3.7.5

Latest version.

Author: indygreg

pythonbuild/downloads.py

@@ -65,10 +65,10 @@
         "version": "3.15.1",
     },
     "cpython-3.7": {
-        "url": "https://www.python.org/ftp/python/3.7.4/Python-3.7.4.tar.xz",
-        "size": 17131432,
-        "sha256": "fb799134b868199930b75f26678f18932214042639cd52b16da7fd134cd9b13f",
-        "version": "3.7.4",
+        "url": "https://www.python.org/ftp/python/3.7.5/Python-3.7.5.tar.xz",
+        "size": 17236432,
+        "sha256": "e85a76ea9f3d6c485ec1780fca4e500725a4a7bbc63c78ebc44170de9b619d94",
+        "version": "3.7.5",
         "licenses": ["Python-2.0", "CNRI-Python"],
         "license_file": "LICENSE.cpython.txt",
     },