Backport deps updates, refactorings and fixes from master

[andrevmatos]

Fixes #3100

Short description
In order to keep stable aka v2 maintained, we need to backport the updates and refactorings (code quality) from the work done for Arbitrum into the stable branch. This includes the fix for the linked bug, which is also currently affecting Goerli. Keeping dependencies up to date is also important for security, in order to ensure we're not hit by fixed security flaws.

This doesn't pull the schema and contracts changes, which remain in master for arbitrum only, but keep the rest of the codebase somehow closer to master in order to facilitate any later bugfix and updates.

Most of these commits were already reviewed as part of Arbitrum work (sans conflict fixes). Otherwise, just the last 6 commits should require independent review.

Definition of Done

• Steps to manually test the change have been documented
• Acceptance criteria are met
• Change has been manually tested by the reviewer (dApp)

Steps to manually test the change (dApp)

[codecov]

Codecov Report

Merging #3101 (2198674) into stable (99a3f0a) will increase coverage by 0.07%.
The diff coverage is 90.35%.

@@            Coverage Diff             @@
##           stable    #3101      +/-   ##
==========================================
+ Coverage   93.06%   93.14%   +0.07%     
==========================================
  Files         213      213              
  Lines        8513     8591      +78     
  Branches     1362     1473     +111     
==========================================
+ Hits         7923     8002      +79     
- Misses        483      530      +47     
+ Partials      107       59      -48     

Flag	Coverage Δ
dapp	88.83% <ø> (+0.70%)	⬆️
dapp.unit	88.83% <ø> (+0.70%)	⬆️
sdk	95.43% <90.35%> (-0.34%)	⬇️
sdk.e2e	72.57% <67.51%> (-0.31%)	⬇️
sdk.integration	79.49% <63.95%> (-0.80%)	⬇️
sdk.unit	49.38% <44.67%> (+0.09%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
raiden-ts/src/epics.ts	98.94% <ø> (ø)
raiden-ts/src/services/types.ts	100.00% <ø> (ø)
raiden-ts/src/channels/epics/close.ts	91.80% <50.00%> (-1.42%)	⬇️
raiden-ts/src/utils/types.ts	94.50% <50.00%> (-2.13%)	⬇️
raiden-ts/src/db/utils.ts	90.52% <75.00%> (+0.05%)	⬆️
raiden-ts/src/utils/ethers.ts	89.47% <77.27%> (-1.96%)	⬇️
raiden-ts/src/helpers.ts	87.50% <86.84%> (-0.95%)	⬇️
raiden-ts/src/services/utils.ts	96.29% <89.74%> (-1.98%)	⬇️
raiden-ts/src/channels/epics/block.ts	100.00% <100.00%> (ø)
raiden-ts/src/config.ts	94.59% <100.00%> (ø)
... and 69 more

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[weilbith]

To merge this, we need to locally serve the current gh-pages version, install it, create some state etc. Then deploy locally this version and see if it works.

[andrevmatos]

I've tested locally with old state (CLI, channels and udc deposits) in goerli, and this version worked fine; performed some direct transfers, everything working as expected.

[weilbith]

So just the dApp is missing. :)

[andrevmatos]

The changes merged only touch SDK and CLI. dApp's state (which is quite small) wasn't touched. Feel free to test it if you require it for approval =)