COMP: Update ITKRemoteModuleBuildTestPackageAction to v5.4.6

Fix macos-13 runner deprecation - v5.4.0 references macos-13 which
has been removed from GitHub Actions. v5.4.6 uses macos-15-intel and
includes GHCR-mirrored dockcross image pre-pull.

Author: hjmjohnson

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

@@ -5,4 +5,4 @@ on: [push,pull_request]
 
 jobs:
   cxx-build-workflow:
-    uses: InsightSoftwareConsortium/ITKRemoteModuleBuildTestPackageAction/.github/workflows/build-test-cxx.yml@v5.4.0
+    uses: InsightSoftwareConsortium/ITKRemoteModuleBuildTestPackageAction/.github/workflows/build-test-cxx.yml@v5.4.6