go.mod: upgrade gnark to v0.9.0

[AnnaShaleva]

Close #3079.

Draft until the minimum required go version of the project is 1.19.

[codecov]

Codecov Report

Merging #3145 (545dbbc) into master (69a0104) will increase coverage by 0.00%.
Report is 15 commits behind head on master.
The diff coverage is 76.00%.

@@           Coverage Diff           @@
##           master    #3145   +/-   ##
=======================================
  Coverage   85.35%   85.35%           
=======================================
  Files         323      323           
  Lines       43603    43603           
=======================================
+ Hits        37217    37218    +1     
  Misses       4921     4921           
+ Partials     1465     1464    -1     

Files	Coverage Δ
pkg/consensus/consensus.go	75.91% <ø> (ø)
pkg/core/dao/dao.go	78.17% <100.00%> (ø)
pkg/core/mempool/mem_pool.go	97.14% <ø> (ø)
pkg/network/bqueue/queue.go	82.17% <ø> (ø)
pkg/network/server.go	75.37% <ø> (ø)
pkg/rpcclient/client.go	86.56% <100.00%> (ø)
pkg/rpcclient/local.go	86.95% <ø> (ø)
pkg/rpcclient/wsclient.go	74.35% <ø> (ø)
pkg/services/metrics/metrics.go	63.63% <ø> (ø)
pkg/services/notary/notary.go	82.40% <ø> (-0.59%)	⬇️
... and 8 more

... and 1 file with indirect coverage changes

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