chore: Correct the release script

Author: rholshausen

Cargo.lock

@@ -106,6 +106,7 @@ executeOnShell "gzip -c target/release/pact-stub-server > target/release/pact-st
 def nextVer = Version.valueOf(releaseVer).incrementPatchVersion()
 ask("Bump version to $nextVer?: [Y]") {
   executeOnShell "sed -i -e 's/version = \"${releaseVer}\"/version = \"${nextVer}\"/' Cargo.toml"
+  executeOnShell("cargo update")
   executeOnShell("git add Cargo.toml Cargo.lock")
   executeOnShell("git diff --cached")
   ask("Commit and push this change?: [Y]") {