change core version to 7.6.8

Author: jondy

setup.py

@@ -113,7 +113,7 @@
     },
 
     install_requires=[
-        'pyarmor.cli.core~=7.6.7'
+        'pyarmor.cli.core~=7.6.8'
     ],
 
     entry_points={

src/cli/default.cfg

@@ -6,7 +6,7 @@ minor = 1
 patch = 9
 
 ;; Compatible core version
-cli.core = 7.6.7
+cli.core = 7.6.8
 mini.core = 1.0
 ecc.core = 1.0
 vmc.core = 1.0