Set target version to 7.7.7

Author: livenson

.env.example

@@ -1,5 +1,5 @@
-WALDUR_MASTERMIND_IMAGE_TAG=7.7.6
-WALDUR_HOMEPORT_IMAGE_TAG=7.7.6
+WALDUR_MASTERMIND_IMAGE_TAG=7.7.7
+WALDUR_HOMEPORT_IMAGE_TAG=7.7.7
 
 # WALDUR_DOMAIN will be used to generate both for Let's Encrypt and Self-signed (internal) certificates
 WALDUR_DOMAIN=localhost