fix gpg warning unsafe permissions on homedir

When you copy gpg configuration form other machine, you might get warning as follow

gpg: WARNING: unsafe permissions on homedir '/home/user/.gnupg'

To fix this, make sure that The .gnupg directory has the correct permission.

chown -R $(whoami) ~/.gnupg/

And files & folder inside has the correct permisson

find ~/.gnupg -type f -exec chmod 600 {} \; # Set 600 for files
find ~/.gnupg -type d -exec chmod 700 {} \; # Set 700 for directories