Use the 10.7.3[.]a.0 Khiops Core alpha pre-release in native and Conda tests

Author: popescu-v

.github/workflows/conda.yml

@@ -3,13 +3,13 @@ name: Conda Package
 env:
   # Note: The default Khiops version must never be an alpha release as they are
   #       ephemeral. To test alpha versions run the workflow manually.
-  DEFAULT_KHIOPS_CORE_VERSION: 10.7.0b.0
+  DEFAULT_KHIOPS_CORE_VERSION: 10.7.3a.0
   DEFAULT_SAMPLES_VERSION: 11.0.0
 on:
   workflow_dispatch:
     inputs:
       khiops-core-version:
-        default: 10.7.0b.0
+        default: 10.7.3a.0
         description: khiops-core version for testing
       khiops-samples-version:
         default: 11.0.0

.github/workflows/tests.yml

@@ -2,7 +2,7 @@
 name: Tests
 env:
   DEFAULT_SAMPLES_REVISION: 11.0.0
-  DEFAULT_KHIOPS_DESKTOP_REVISION: 10.7.0-b.0
+  DEFAULT_KHIOPS_DESKTOP_REVISION: 10.7.3-a.0
 on:
   workflow_dispatch:
     inputs:
@@ -13,7 +13,7 @@ on:
         default: 10.7.3-a.0.0
         description: Development Docker Image Tag
       khiops-desktop-revision:
-        default: 10.7.0-b.0
+        default: 10.7.3-a.0
         description: Khiops Windows Desktop Application Version
       run-expensive-tests:
         type: boolean