Fix more shellcheck warnings

Signed-off-by: Christian König <github@yubiuser.dev>

advanced/Scripts/version.sh

@@ -8,18 +8,16 @@
 # This file is copyright under the latest version of the EUPL.
 # Please see LICENSE file for your rights under this license.
 
-# Ignore warning about `local` being undefinded in POSIX
-# shellcheck disable=SC3043
-# https://github.com/koalaman/shellcheck/wiki/SC3043#exceptions
-
 # Source the versions file populated by updatechecker.sh
 cachedVersions="/etc/pihole/versions"
 
 if [ -f ${cachedVersions} ]; then
+    # shellcheck source=/dev/null
     . "$cachedVersions"
 else
     echo "Could not find /etc/pihole/versions. Running update now."
     pihole updatechecker
+     # shellcheck source=/dev/null
     . "$cachedVersions"
 fi