Update dependency gulp-uglify to v1.5.4

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
gulp-uglify	1.0.2 → 1.5.4

---

Release Notes

terinjokes/gulp-uglify (gulp-uglify)

v1.5.4

Compare Source

v1.5.3

Compare Source

• Updated UglifyJS to 2.6.2

v1.5.2

Compare Source

• Updated UglfiyJS to 2.6.1

v1.5.1

Compare Source

v1.4.2

Compare Source

• Updated UglifyJS to 2.5.0.
• CI and dependencies chores.

v1.4.1

Compare Source

• Detect if options is a non-Object and log a warning.

  Older versions of Node.js did not allow Strings to be passed to Object.keys leading to errors and confusion to users following certain tutorials.

v1.4.0

Compare Source

• Deprecated the preserveComments option of "some".
• Added the preserveComments option of "license" that uses uglify-save-license.

v1.3.0

Compare Source

• Updated UglifyJS to 2.4.24.
• Streams3 support via through2 dependency update.

v1.2.0

Compare Source

• Update dependencies, including UglifyJS to 2.4.19.

v1.1.0

Compare Source

• Fix sources path in source maps (thanks @​floridoo)
• Update UglifyJS to 2.4.16 (thanks @​tschaub)

---

Configuration

📅 Schedule: (UTC)

• Branch creation
  • At any time (no schedule defined)
• Automerge
  • At any time (no schedule defined)

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR was generated by Mend Renovate. View the repository job log.