fix(templates): Use Playwright version locked base docker images

[Pijukatel]

Description

Base Docker images are bumping Playwright version automatically. This can make templates broken. Bumping the version in templates should be a manual step.

(Should be used together with #1996 for fixing and stabilizing templates)

Issues

• Closes: 295

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.03%. Comparing base (74e00fe) to head (4c30543).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1997      +/-   ##
==========================================
+ Coverage   92.99%   93.03%   +0.04%     
==========================================
  Files         167      167              
  Lines       11770    11770              
==========================================
+ Hits        10945    10950       +5     
+ Misses        825      820       -5     

Flag	Coverage Δ
unit	93.03% <ø> (+0.04%)	⬆️

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[vdusek]

LGTM