fix: Use pip 25.2 for cflinuxfs5

pip 26.0.1 requires flit-core build dependency which is not available.
Use pip 25.2 which works correctly for all stacks.

Author: ivanovac

manifest.yml

@@ -72,6 +72,7 @@ dependencies:
   uri: https://buildpacks.cloudfoundry.org/dependencies/pip/pip_25.2_linux_noarch_any-stack_7dc1e988.tgz
   sha256: 7dc1e9882eb18f53150261c3a0cde7d5a39cdb18843c930ee01db8582f6b4f27
   cf_stacks:
+  - cflinuxfs5
   - cflinuxfs4
   - cflinuxfs3
   source: https://files.pythonhosted.org/packages/20/16/650289cd3f43d5a2fadfd98c68bd1e1e7f2550a1a5326768cddfbcedb2c5/pip-25.2.tar.gz
@@ -80,8 +81,7 @@ dependencies:
   version: 26.0.1
   uri: https://buildpacks.cloudfoundry.org/dependencies/pip/pip_26.0.1_linux_noarch_any-stack_0750a38b.tgz
   sha256: 0750a38b65c6038a0415a4ff15ef2df61fcaa6c1e5ec9d8c6678222dbac91306
-  cf_stacks:
-  - cflinuxfs5
+  cf_stacks: []
   source: https://files.pythonhosted.org/packages/48/83/0d7d4e9efe3344b8e2fe25d93be44f64b65364d3c8d7bc6dc90198d5422e/pip-26.0.1.tar.gz
   source_sha256: c4037d8a277c89b320abe636d59f91e6d0922d08a05b60e85e53b296613346d8
 - name: pipenv