lower-case name consistency for local actions

Signed-off-by: Karl W. Schulz <karl.schulz@amd.com>

.github/workflows/packaging.yml

@@ -1,4 +1,4 @@
-name: Packaging
+name: packaging
 
 on:
   push:

.github/workflows/tarball.yml

@@ -1,4 +1,4 @@
-name: Tarball
+name: tarball
 
 on:
   push: