rosco 0.106.0

• feat(bake/manifest): allow multiple input artifacts (#251)
• feat(bake/artifacts): Pass artifacts to packer (#253)
• chore(helm): install helm (#255)
• chore(helm): install openssl & curl for helm install (#256)
• feat(artifacts): Enable rosco to install packages passed as artifacts (#257)
• fix(artifacts): Use artifact name to construct package name (#258)
• fix(manifest): Fix using base64 artifacts in manifest bakery