Update MongoDB comparision blog post

[ptrfarkas]

Correction added on SSPL

[mergify]

Marketing blog posts should be reviewed by @ptrfarkas and @AlekSi.

[codecov]

Codecov Report

Merging #3117 (e41cb74) into main (d422a4f) will decrease coverage by 54.13%.
The diff coverage is n/a.

❗ Current head e41cb74 differs from pull request most recent head ea182fe. Consider uploading reports for the commit ea182fe to get more accurate results

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #3117       +/-   ##
===========================================
- Coverage   76.57%   22.45%   -54.13%     
===========================================
  Files         390      390               
  Lines       21419    21419               
===========================================
- Hits        16402     4810    -11592     
- Misses       4098    16168    +12070     
+ Partials      919      441      -478     

see 238 files with indirect coverage changes

Flag	Coverage Δ
hana	?
integration	5.51% <ø> (-67.59%)	⬇️
mongodb	5.51% <ø> (ø)
pg	∅ <ø> (∅)
shard-1	5.51% <ø> (-50.38%)	⬇️
shard-2	?
shard-3	?
sqlite	?
unit	20.38% <ø> (-3.76%)	⬇️

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