Do not disable shellcheck 2206 and 2068 in _forgit_ignore (#382)

Shellcheck 2206 and 2068 have been disabled in _forgit_ignore for a very long time. The code that triggers the shellchecks was added in ce240ac before the shellcheck action had been added. The shellcheck for the lines in question got disabled in c14ce93. Disabling shellcheck does not seem necessary, instead this commit implements the fixes shellcheck suggest.

bin/git-forgit

@@ -905,8 +905,7 @@ _forgit_ignore() {
         --preview=\"$FORGIT ignore_preview {2}\"
         $FORGIT_IGNORE_FZF_OPTS
     "
-    # shellcheck disable=SC2206
-    args=($@)
+    args=("$@")
     if [[ $# -eq 0 ]]; then
         args=()
         while IFS='' read -r arg; do
@@ -915,8 +914,7 @@ _forgit_ignore() {
             FZF_DEFAULT_OPTS="$opts" fzf | awk '{print $2}')
     fi
     [ ${#args[@]} -eq 0 ] && return 1
-    # shellcheck disable=SC2068
-    _forgit_ignore_get ${args[@]}
+    _forgit_ignore_get "${args[@]}"
 }
 _forgit_ignore_update() {
     if [[ -d "$FORGIT_GI_REPO_LOCAL" ]]; then