[Snyk] Upgrade ethereumjs-tx from 1.3.4 to 1.3.7

[aishmanisha]

Snyk has created this PR to upgrade ethereumjs-tx from 1.3.4 to 1.3.7.

ℹ️ Keep your dependencies up-to-date. This makes it easier to fix existing vulnerabilities and to more quickly identify and fix newly disclosed vulnerabilities when they affect your project.

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• The recommended version is 3 versions ahead of your current version.

• The recommended version was released 7 years ago.

Release notes

Package name: ethereumjs-tx

• 1.3.7 - 2018-07-25
  
  • Fix bug causing FakeTransaction.from to not retrieve sender address from tx signature, see PR #118
• 1.3.6 - 2018-07-02
  
  • Fixes issue #108 with the FakeTransaction.hash() function by reverting the introduced signature handling changes in Fake transaction hash creation from PR #94 introduced in v1.3.5. The signature is now again only created and added to the hash when from address is set and from is not defaulting to the zero adress any more, see PR #110
  • Added additional tests to cover issue described above
• 1.3.5 - 2018-06-22
  
  • Include signature by default in FakeTransaction.hash, PR #97
  • Fix FakeTransaction signature failure bug, PR #94
• 1.3.4 - 2018-03-07
  
  • Fix a bug producing hash collisions on FakeTransaction for different senders, PR #81
  • Switched from deprecated es2015 to env babel preset, PR #86
  • Dropped Node 4 support

from ethereumjs-tx GitHub release notes

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