Revert "Update dependencies"

[wouterbles]

Reverts #410

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.

Project coverage is 30.01%. Comparing base (9a79a6f) to head (ac88f98).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
app/Http/Controllers/AgendaItemController.php	0.00%	1 Missing ⚠️
app/Http/Controllers/NewsItemController.php	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #422      +/-   ##
============================================
- Coverage     30.02%   30.01%   -0.01%     
  Complexity      530      530              
============================================
  Files            80       80              
  Lines          2028     2022       -6     
============================================
- Hits            609      607       -2     
+ Misses         1419     1415       -4     

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