Apply suggestions from code review

Co-authored-by: Mathias Fredriksson <mafredri@gmail.com>

vault-github/run.sh

@@ -86,13 +86,13 @@ install() {
 
 TMP=$(mktemp -d)
 if ! (
-  cd $TMP
+  cd "$TMP"
   install
 ); then
   echo "Failed to install Vault CLI."
   exit 1
 fi
-rm -rf $TMP
+rm -rf "$TMP"
 
 # Authenticate with Vault
 printf "🔑 Authenticating with Vault ...\n\n"

vault-token/run.sh

@@ -84,10 +84,10 @@ install() {
 
 TMP=$(mktemp -d)
 if ! (
-  cd $TMP
+  cd "$TMP"
   install
 ); then
   echo "Failed to install Vault CLI."
   exit 1
 fi
-rm -rf $TMP
+rm -rf "$TMP"