Auto merge of #4702 - mathstuf:update-lockfile-switch-colors, r=alexcrichton
Auto merge of #4702 - mathstuf:update-lockfile-switch-colors, r=alexcrichton

cargo_generate_lockfile: flip Updating and Adding colors

Updating is green elsewhere and is more common as well.

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Cc: da39a3ee5e6b4b0d3255bfef95601890afd80709@alexcrichton

tshepang/cargo,eminence/cargo,eminence/cargo,achanda/cargo,achanda/cargo,eminence/cargo,tsurai/cargo,vojtechkral/cargo,nipunn1313/cargo,rust-lang/cargo,tsurai/cargo,rust-lang/cargo,rustyhorde/cargo,nipunn1313/cargo,rust-lang/cargo,tsurai/cargo,vojtechkral/cargo,achanda/cargo,rustyhorde/cargo,tsurai/cargo,nipunn1313/cargo,tsurai/cargo,vojtechkral/cargo,eminence/cargo,rustyhorde/cargo,rust-lang/cargo,tshepang/cargo,tshepang/cargo,nipunn1313/cargo,vojtechkral/cargo,achanda/cargo,tshepang/cargo,rustyhorde/cargo