v2.59.1

Merged

• test: prefix addons tests filename with 'command.' #1087
• fix(command-dev): handle missing content-type header #1083
• fix(dev-external-redirects): re-stream request body #1085
• fix(deps): update netlify packages #1086
• fix(deps): update netlify packages #1084
• chore(deps): lock file maintenance #1082
• chore(deps): update node.js to >=v12.18.3 #1077
• chore(deps): group netlify packages updates #1073
• fix(deps): update dependency update-notifier to v4 #1074
• chore(deps): upgrade Netlify Build #1072
• Simplify detectors a little more #1069
• Remove detectors code that is not currently working #1068