Fixed proc-macro2 version (#550)

* fixes proc-macro2 in dependencies

* adds missing locked versions, and a verbose print for cargo check

* commits Cargo.lock files

* removes unnecessary Cargo.lock entries

* adds missing Cargo.lock

libraries/persistent_store/fuzz/.gitignore

@@ -1,4 +1,3 @@
-/Cargo.lock
 /artifacts/
 /corpus/
 /target/