Test: Freeze npm metadata snapshot dates

[glensc]

Extracted from #60

Addresses #7

Refs

• Tests: Update jest snapshots #50

[glensc]

Tests pass now

$ jest
 PASS  src/index.test.ts
  checkForRelease
    ✓ Says congrats if there is a package diff version change (1ms)
    ✓ Says nothing if there is a no difference in version (1ms)
    ✓ Says nothing if there is a backslip in version
    ✓ does nothing when there's no version change
  checkForTypesInDeps
    ✓ does nothing when there's no dependency changes
    ✓ when there is an @types dependency, it should call fail
  checkForLockfileDiff
    ✓ does nothing when there's no dependency changes
    ✓ when there are dependency changes, and no lockfile in modified - warn
    ✓ when there are dependency changes, and a lockfile in modified - do not warn (1ms)
    ✓ detects changes from multiple package.json files (476ms)
  npm metadata
    ✓ Shows a bunch of useful text for a new dep (1ms)
  Feature Flags
    ✓ should skip checkForRelease if options.disableCheckForRelease is provided
    ✓ should skip checkForLockFileDiff if options.disableCheckForLockfileDiff is provided
    ✓ should skip checkForTypesInDeps if options.disableCheckForTypesInDeps is provided (192ms)
    ✓ should skip checkForNewDependencies if options.disableCheckForNewDependencies is provided (1ms)

Test Suites: 1 passed, 1 total
Tests:       15 passed, 15 total
Snapshots:   3 passed, 3 total
Time:        1.229s
Ran all test suites.
✨  Done in 2.16s.

[glensc]

@orta, do you need anything else to get this merged?

[glensc]

@orta ping?

[orta]

Looks good