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/cbor/Cargo.lock

@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "sk-cbor"
+version = "0.1.2"

libraries/cbor/fuzz/Cargo.lock

@@ -0,0 +1,37 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "arbitrary"
+version = "0.4.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "db55d72333851e17d572bec876e390cd3b11eb1ef53ae821dd9f3b653d2b4569"
+
+[[package]]
+name = "cc"
+version = "1.0.73"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2fff2a6927b3bb87f9595d67196a70493f627687a71d87a0d692242c33f58c11"
+
+[[package]]
+name = "libfuzzer-sys"
+version = "0.3.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fcf184a4b6b274f82a5df6b357da6055d3e82272327bba281c28bbba6f1664ef"
+dependencies = [
+ "arbitrary",
+ "cc",
+]
+
+[[package]]
+name = "sk-cbor"
+version = "0.1.2"
+
+[[package]]
+name = "sk-cbor-fuzz"
+version = "0.0.0"
+dependencies = [
+ "libfuzzer-sys",
+ "sk-cbor",
+]