chore: upgrade script for the 2.1 release

[faustbrian]

Proposed changes

Upgrade script for the upcoming 2.1 release.

Resolves #1994

Types of changes

• Other

Checklist

• I have read the CONTRIBUTING documentation
• Lint and unit tests pass locally with my changes

[codecov-io]

Codecov Report

Merging #1999 into develop will not change coverage.
The diff coverage is 0%.

@@           Coverage Diff            @@
##           develop    #1999   +/-   ##
========================================
  Coverage    72.18%   72.18%           
========================================
  Files          386      386           
  Lines         8353     8353           
  Branches      1216     1190   -26     
========================================
  Hits          6030     6030           
+ Misses        2290     2288    -2     
- Partials        33       35    +2

Impacted Files	Coverage Δ
packages/core-container/src/environment.ts	82.75% <0%> (ø)	⬆️
packages/core-test-utils/src/helpers/container.ts	0% <0%> (ø)	⬆️
packages/core-test-utils/src/generators/wallets.ts	14.28% <0%> (ø)	⬆️

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[faustbrian]

#2000 should be resolved first