Update fallback spec version

build.gradle

@@ -185,7 +185,7 @@ project(':forge') {
     }
 
     ext {
-        SPEC_VERSION = '29.0' // This is overwritten by git tag, but here so dev time doesnt explode
+        SPEC_VERSION = '30.0' // This is overwritten by git tag, but here so dev time doesnt explode
         // The new versioning sceme is <MCVersion>-<ForgeMC>.<RB>.<CommitsSinceRB>
         // ForgeMC is a unique identifier for every MC version we have supported.
         // Essentially, the same as the old, except dropping the first number, and the builds are no longer unique.