Better restrict the gemfile

[lodewiges]

added restricition for all gems so renovate automaticly updates them
solves #1055

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 75.13%. Comparing base (3489d45) to head (6da6ea9).
Report is 1 commits behind head on staging.

Additional details and impacted files

@@           Coverage Diff            @@
##           staging    #1057   +/-   ##
========================================
  Coverage    75.13%   75.13%           
========================================
  Files           53       53           
  Lines         1102     1102           
========================================
  Hits           828      828           
  Misses         274      274           

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