chore(dependencies): bump encodable to 0.7.8

[rusackas]

SUMMARY

Dependabot tried to go to 1.0, but it doesn't work as of 0.8.0 or higher without typescript headaches. This is the last version that seems to "just work"

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

TESTING INSTRUCTIONS

ADDITIONAL INFORMATION

• Has associated issue:
• Required feature flags:
• Changes UI
• Includes DB Migration (follow approval process in SIP-59)
  • Migration is atomic, supports rollback & is backwards-compatible
  • Confirm DB migration upgrade and downgrade tested
  • Runtime estimates and downtime expectations provided
• Introduces new feature or API
• Removes existing feature or API

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (1f5ae74) 67.24% compared to head (c7c72c9) 66.94%.
Report is 65 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #26903      +/-   ##
==========================================
- Coverage   67.24%   66.94%   -0.30%     
==========================================
  Files        1895     1900       +5     
  Lines       74248    76078    +1830     
  Branches     8257     8921     +664     
==========================================
+ Hits        49929    50934    +1005     
- Misses      22248    22970     +722     
- Partials     2071     2174     +103     

Flag	Coverage Δ
javascript	56.78% <ø> (-0.23%)	⬇️

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[mistercrunch]

Note you can prevent dependabot from re-opening stuff here https://github.com/apache/superset/blob/master/.github/dependabot.yml#L4-L6

[rusackas]

Note you can prevent dependabot from re-opening stuff here https://github.com/apache/superset/blob/master/.github/dependabot.yml#L4-L6

You can also do all this:

@dependabot ignore this major version will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself)
@dependabot ignore this minor version will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself)
@dependabot ignore this dependency will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself)

[john-bodley]

@kristw any ideas how to upgrade this package?