Fixes and additions to group endpoints

• dependabot: lodash-4.17.21 959329d
• dependabot: hosted-git-info-2.8.9 0045301
• dependabot: glob-parent-5.1.2 cacb1fd
• dependabot: ws-7.5.5 797637d
• chore: updated dependencies 09e7a5b
• chore: updated deep dependencies e598a01
• Merge branch 'master' of github.com:zygos/mailerlite-api-v2-node df4cad5
• Bump ws from 7.3.1 to 7.5.5 92515ba
• Merge pull request #24 from ImErvin/new/search-group d48c1b8
• chore: updated dependencies 28bc08b
• Added search group fn with readme & test 3e48327
• Merge pull request #17 from fmilioni/master ed6b912
• Bump glob-parent from 5.1.1 to 5.1.2 b5074ed
• Bump hosted-git-info from 2.8.8 to 2.8.9 e81b628
• Bump lodash from 4.17.20 to 4.17.21 f8c841f
• fix: params missing in getGroupSubscribers c7f8da9

v1.1.2...v1.2.0