Chore(deps): bump github.com/elastic/go-ucfg from 0.8.3 to 0.8.4 (#578)

Bumps [github.com/elastic/go-ucfg](https://github.com/elastic/go-ucfg) from 0.8.3 to 0.8.4.
- [Release notes](https://github.com/elastic/go-ucfg/releases)
- [Changelog](https://github.com/elastic/go-ucfg/blob/master/CHANGELOG.md)
- [Commits](elastic/go-ucfg@v0.8.3...v0.8.4)

---
updated-dependencies:
- dependency-name: github.com/elastic/go-ucfg
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

Author: dependabot[bot]

go.mod

@@ -11,7 +11,7 @@ require (
 	github.com/cespare/xxhash/v2 v2.1.2
 	github.com/elastic/go-elasticsearch/v7 v7.15.1
 	github.com/elastic/go-licenser v0.4.0
-	github.com/elastic/go-ucfg v0.8.3
+	github.com/elastic/go-ucfg v0.8.4
 	github.com/elastic/package-spec v1.2.0
 	github.com/fatih/color v1.13.0
 	github.com/go-git/go-billy/v5 v5.3.1

go.sum

@@ -339,8 +339,8 @@ github.com/elastic/go-elasticsearch/v7 v7.15.1/go.mod h1:OJ4wdbtDNk5g503kvlHLyEr
 github.com/elastic/go-licenser v0.3.1/go.mod h1:D8eNQk70FOCVBl3smCGQt/lv7meBeQno2eI1S5apiHQ=
 github.com/elastic/go-licenser v0.4.0 h1:jLq6A5SilDS/Iz1ABRkO6BHy91B9jBora8FwGRsDqUI=
 github.com/elastic/go-licenser v0.4.0/go.mod h1:V56wHMpmdURfibNBggaSBfqgPxyT1Tldns1i87iTEvU=
-github.com/elastic/go-ucfg v0.8.3 h1:leywnFjzr2QneZZWhE6uWd+QN/UpP0sdJRHYyuFvkeo=
-github.com/elastic/go-ucfg v0.8.3/go.mod h1:iaiY0NBIYeasNgycLyTvhJftQlQEUO2hpF+FX0JKxzo=
+github.com/elastic/go-ucfg v0.8.4 h1:OAHTnubzXKsYYYWVzl8psLcS5mCbNKjXxtMY41itthk=
+github.com/elastic/go-ucfg v0.8.4/go.mod h1:4E8mPOLSUV9hQ7sgLEJ4bvt0KhMuDJa8joDT2QGAEKA=
 github.com/elastic/package-spec v1.2.0 h1:uCWMNxM8fq+lkO67Ddgi1IwAoZIjfxcNyYpyWAXjPG8=
 github.com/elastic/package-spec v1.2.0/go.mod h1:KzGTSDqCkdhmL1IFpOH2ZQNSSE9JEhNtndxU3ZrQilA=
 github.com/elazarl/goproxy v0.0.0-20180725130230-947c36da3153 h1:yUdfgN0XgIJw7foRItutHYUIhlcKzcSf5vDpdhQAKTc=
@@ -1525,6 +1525,7 @@ gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
 gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
 gopkg.in/gemnasium/logrus-airbrake-hook.v2 v2.1.2/go.mod h1:Xk6kEKp8OKb+X14hQBKWaSkCsqBpgog8nAV2xsGOxlo=
 gopkg.in/gorp.v1 v1.7.2/go.mod h1:Wo3h+DBQZIxATwftsglhdD/62zRFPhGhTiu5jUJmCaw=
+gopkg.in/hjson/hjson-go.v3 v3.0.1/go.mod h1:X6zrTSVeImfwfZLfgQdInl9mWjqPqgH90jom9nym/lw=
 gopkg.in/inf.v0 v0.9.1 h1:73M5CoZyi3ZLMOyDlQh031Cx6N9NDJ2Vvfl76EDAgDc=
 gopkg.in/inf.v0 v0.9.1/go.mod h1:cWUDdTG/fYaXco+Dcufb5Vnc6Gp2YChqWtbxRZE0mXw=
 gopkg.in/ini.v1 v1.51.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=