Remind to bump protocol versions before release

[kostko]

Fixes #3097

[codecov]

Codecov Report

Merging #3098 into master will decrease coverage by 0.37%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #3098      +/-   ##
==========================================
- Coverage   68.31%   67.93%   -0.38%     
==========================================
  Files         372      372              
  Lines       36823    36833      +10     
==========================================
- Hits        25156    25024     -132     
- Misses       8421     8576     +155     
+ Partials     3246     3233      -13     

Impacted Files	Coverage Δ
go/oasis-node/cmd/ias/auth_registry.go	0.00% <0.00%> (-69.24%)	⬇️
...nsensus/tendermint/apps/keymanager/transactions.go	0.00% <0.00%> (-44.12%)	⬇️
go/keymanager/api/policy_sgx.go	33.33% <0.00%> (-13.34%)	⬇️
go/consensus/tendermint/abci/state/state.go	61.53% <0.00%> (-7.70%)	⬇️
...consensus/tendermint/apps/keymanager/keymanager.go	62.92% <0.00%> (-6.75%)	⬇️
go/oasis-node/cmd/keymanager/keymanager.go	45.55% <0.00%> (-5.28%)	⬇️
go/consensus/tendermint/keymanager/keymanager.go	81.92% <0.00%> (-4.82%)	⬇️
go/registry/api/grpc.go	31.49% <0.00%> (-4.59%)	⬇️
go/consensus/tendermint/roothash/roothash.go	61.47% <0.00%> (-4.54%)	⬇️
go/worker/keymanager/handler.go	60.37% <0.00%> (-3.78%)	⬇️
... and 46 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update c56a606...5f58fed. Read the comment docs.

[ptrus]

Oh yeah, i always forget this in PRs