Remove major version upgrades from dependabot

[Shaptic]

This removes the major version upgrade PRs such as #1011 from dependabot's automatic process. This is because major versions often require significant code changes and also often have other breaking changes such as dropping support for certain environments that we need to support. I regularly evaluate the workload needed to support the major upgrades whenever doing releases (e.g., in #993 you can see lots of dependency upgrades), so the automated process isn't necessary and in fact is risky in keeping this repository stable.

(Also for some reason yarn _prettier needed to be run to auto-format some test files which were causing CI to fail.)

[github-actions]

Size Change: 0 B

Total Size: 12.1 MB

ℹ️ View Unchanged

Filename	Size
dist/stellar-sdk.js	6.78 MB
dist/stellar-sdk.min.js	5.34 MB

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