COMP: Update for ITK 6.0 Beta 2

The C++ release branch tags includes additional CMake target fixes.

Drop Python 3.9 (EOL) package builds.

Author: thewtex

.github/workflows/build-test-cxx.yml

@@ -23,7 +23,8 @@ on:
         description: 'Git version tag or commit hash for the base ITK build'
         required: false
         type: string
-        default: 'v6.0b01'
+        # release branch 2026-03-10
+        default: 'c6e1c1be6a86236cbb812bd71eec5a4df9b1353c'
       itk-module-deps:
         description: 'Colon-delimited list of ITK remote module dependencies to build. Format as module_name@tag:...'
         # example: MeshToPolyData@3ad8f08:BSplineGradient@0.3.0

.github/workflows/build-test-package-python.yml

@@ -13,14 +13,14 @@ on:
         description: 'Github release version tag for the ITKPythonBuilds build archive to use'
         required: false
         type: string
-        default: 'v6.0b01.post1'
+        default: 'v6.0b02'
       itk-python-package-tag:
         # See https://github.com/InsightSoftwareConsortium/ITKPythonPackage
         description: 'Git tag or commit hash for ITKPythonPackage build scripts to use'
         required: false
         type: string
-        # v6.0b01
-        default: 'v6.0b01.post1'
+        # v6.0b02
+        default: 'v6.0b02'
       itk-python-package-org:
         description: 'Github organization name for fetching ITKPythonPackage build scripts'
         required: false
@@ -37,7 +37,7 @@ on:
         type: string
         # Do not build explicit python 3.12 packages. The 3.11 packages support >= 3.11.
         # Python 3.12 and 3.13 aim to maintain ABI compatibility with Python 3.11 through the Stable ABI.
-        default: '["9","10","11"]'
+        default: '["10","11"]'
       manylinux-platforms:
         description: 'JSON-formatted array of "<manylinux-image>-<arch>" specializations'
         required: false