Update flow parser to v0.307.0 (#19038)

tests/format/flow/hook/__snapshots__/format.test.js.snap

@@ -278,7 +278,8 @@ hook useFoo5<T>() {}
 
 hook useFoo6(...foo) {}
 
-hook useFoo7(...rest?: Foo) {}
+// \`?\` not allowed since flow-parser@0.307.0
+// hook useFoo7(...rest?: Foo) {}
 
 hook useFoo8(foo, ...bar) {}
 
@@ -309,7 +310,8 @@ hook useFoo5<T>() {}
 
 hook useFoo6(...foo) {}
 
-hook useFoo7(...rest?: Foo) {}
+// \`?\` not allowed since flow-parser@0.307.0
+// hook useFoo7(...rest?: Foo) {}
 
 hook useFoo8(foo, ...bar) {}
 

tests/format/flow/hook/hook-declaration.js

@@ -10,7 +10,8 @@ hook useFoo5<T>() {}
 
 hook useFoo6(...foo) {}
 
-hook useFoo7(...rest?: Foo) {}
+// `?` not allowed since flow-parser@0.307.0
+// hook useFoo7(...rest?: Foo) {}
 
 hook useFoo8(foo, ...bar) {}