Update heroku/buildpacks-python to v0.8.0 (#444)

## heroku/python

### Changed

- Updated the default Python version from 3.11.6 to 3.12.1. ([#152](heroku/buildpacks-python#152) and [#154](heroku/buildpacks-python#154))
- Updated wheel from 0.41.3 to 0.42.0. ([#150](heroku/buildpacks-python#150))

Co-authored-by: heroku-linguist[bot] <136119646+heroku-linguist[bot]@users.noreply.github.com>

builder-20/builder.toml

@@ -30,7 +30,7 @@ version = "0.18.2"
 
 [[buildpacks]]
   id = "heroku/python"
-  uri = "docker://docker.io/heroku/buildpack-python@sha256:b99ea12d35565b750ed422b606526158fde6888514eb35a364e332f5a46b82be"
+  uri = "docker://docker.io/heroku/buildpack-python@sha256:5785d433616f0b72d7ceb576896d5e288fe59b7271169fa09feee3d0cd448444"
 
 [[buildpacks]]
   id = "heroku/ruby"
@@ -43,7 +43,7 @@ version = "0.18.2"
 [[order]]
   [[order.group]]
     id = "heroku/python"
-    version = "0.7.3"
+    version = "0.8.0"
   [[order.group]]
     id = "heroku/procfile"
     version = "2.0.2"

builder-22/builder.toml

@@ -30,7 +30,7 @@ version = "0.18.2"
 
 [[buildpacks]]
   id = "heroku/python"
-  uri = "docker://docker.io/heroku/buildpack-python@sha256:b99ea12d35565b750ed422b606526158fde6888514eb35a364e332f5a46b82be"
+  uri = "docker://docker.io/heroku/buildpack-python@sha256:5785d433616f0b72d7ceb576896d5e288fe59b7271169fa09feee3d0cd448444"
 
 [[buildpacks]]
   id = "heroku/ruby"
@@ -43,7 +43,7 @@ version = "0.18.2"
 [[order]]
   [[order.group]]
     id = "heroku/python"
-    version = "0.7.3"
+    version = "0.8.0"
   [[order.group]]
     id = "heroku/procfile"
     version = "2.0.2"