Update dependencies (companion for Substrate#11135) (#5217)

* Update `regex` to 1.5.5

* Update `libc` to 0.2.121

* Update `handlebars` to 4.2.2

* Update `lru` to 0.7.3

* Update `zeroize` to 1.5.4 and `zeroize_derive` to 1.3.2

* update lockfile for {"substrate"}

Co-authored-by: parity-processbot <>