[krb5-auth-dialog] examples: Mark examples as executable

[Guido Günther <guidog src gnome org>]

commit 1c17a9e24af6ef8ec29ac587c1f50cbdf78ddfad
Author: Guido Günther <agx sigxcpu org>
Date:   Thu Oct 20 17:10:35 2022 +0200

    examples: Mark examples as executable
    
    This makes them easier to use

 examples/destroy-ccache.py | 0
 examples/tgt-signals.py    | 0
 2 files changed, 0 insertions(+), 0 deletions(-)
---
diff --git a/examples/destroy-ccache.py b/examples/destroy-ccache.py
old mode 100644
new mode 100755
diff --git a/examples/tgt-signals.py b/examples/tgt-signals.py
old mode 100644
new mode 100755