fix(mkdir): Use lower case for arg names (#2590)

Co-authored-by: Chay Nabors <nabochay@amazon.com>

fix(git): use less aggressive language for description (#2591)

fix(kill): possible null exception (#2576)

fix(node): remove unused variable (#2577)

fix(npm): various strictness errors (#2578)

fix(nvm): remove unused variable (#2579)

fix(pnpm): various strictness errors (#2580)

fix(ssh): fix implicit any error (#2581)

fix(yarn): fix implicit any error (#2582)

feat(sake): update spec (#2584)