chore(setup): Make sed fingerprint patterns in start.sh be case insensitive

setup/start.sh

@@ -167,7 +167,7 @@ if management/status_checks.py --check-primary-hostname; then
 	echo "If you have a DNS problem put the box's IP address in the URL"
 	echo "(https://$PUBLIC_IP/admin) but then check the TLS fingerprint:"
 	openssl x509 -in $STORAGE_ROOT/ssl/ssl_certificate.pem -noout -fingerprint -sha256\
-        	| sed "s/SHA256 Fingerprint=//"
+        	| sed "s/SHA256 Fingerprint=//i"
 else
 	echo https://$PUBLIC_IP/admin
 	echo
@@ -175,7 +175,7 @@ else
 	echo the certificate fingerprint matches:
 	echo
 	openssl x509 -in $STORAGE_ROOT/ssl/ssl_certificate.pem -noout -fingerprint -sha256\
-        	| sed "s/SHA256 Fingerprint=//"
+        	| sed "s/SHA256 Fingerprint=//i"
 	echo
 	echo Then you can confirm the security exception and continue.
 	echo