chore: add missing releases' compare links in changelog

[czeslavo]

We forgot to add these links for the past 3 releases.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (67e5201) 53.18% compared to head (446c40b) 53.18%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #403   +/-   ##
=======================================
  Coverage   53.18%   53.18%           
=======================================
  Files          69       69           
  Lines        5259     5259           
=======================================
  Hits         2797     2797           
  Misses       1876     1876           
  Partials      586      586           

Flag	Coverage Δ
2.1	33.35% <ø> (ø)
2.2	44.70% <ø> (ø)
2.3	33.40% <ø> (-12.00%)	⬇️
2.4	45.48% <ø> (ø)
2.5	45.48% <ø> (ø)
2.6	45.48% <ø> (ø)
2.7	46.96% <ø> (ø)
2.8	46.96% <ø> (ø)
3.0	48.14% <ø> (-2.51%)	⬇️
3.1	52.10% <ø> (ø)
3.2	52.15% <ø> (ø)
3.3	52.15% <ø> (ø)
3.4	52.48% <ø> (ø)
community	38.52% <ø> (ø)
enterprise	51.87% <ø> (ø)
enterprise-nightly	50.84% <ø> (?)
integration	53.18% <ø> (ø)
nightly	37.82% <ø> (?)

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