Chore(deps): bump github.com/elastic/package-spec from 1.8.1 to 1.9.0 (#822)

Bumps [github.com/elastic/package-spec](https://github.com/elastic/package-spec) from 1.8.1 to 1.9.0.
- [Release notes](https://github.com/elastic/package-spec/releases)
- [Commits](elastic/package-spec@v1.8.1...v1.9.0)

---
updated-dependencies:
- dependency-name: github.com/elastic/package-spec
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

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

Author: dependabot[bot]

go.mod

@@ -12,7 +12,7 @@ require (
 	github.com/elastic/go-elasticsearch/v7 v7.17.1
 	github.com/elastic/go-licenser v0.4.0
 	github.com/elastic/go-ucfg v0.8.5
-	github.com/elastic/package-spec v1.8.1
+	github.com/elastic/package-spec v1.9.0
 	github.com/fatih/color v1.13.0
 	github.com/go-git/go-billy/v5 v5.3.1
 	github.com/go-git/go-git/v5 v5.4.2

go.sum

@@ -410,8 +410,8 @@ github.com/elastic/go-licenser v0.4.0 h1:jLq6A5SilDS/Iz1ABRkO6BHy91B9jBora8FwGRs
 github.com/elastic/go-licenser v0.4.0/go.mod h1:V56wHMpmdURfibNBggaSBfqgPxyT1Tldns1i87iTEvU=
 github.com/elastic/go-ucfg v0.8.5 h1:4GB/rMpuh7qTcSFaxJUk97a/JyvFzhi6t+kaskTTLdM=
 github.com/elastic/go-ucfg v0.8.5/go.mod h1:4E8mPOLSUV9hQ7sgLEJ4bvt0KhMuDJa8joDT2QGAEKA=
-github.com/elastic/package-spec v1.8.1 h1:FOBODPtIrKsNSDuRMPy8zDmEj8A2/ZyevnlfwCKi+ms=
-github.com/elastic/package-spec v1.8.1/go.mod h1:KzGTSDqCkdhmL1IFpOH2ZQNSSE9JEhNtndxU3ZrQilA=
+github.com/elastic/package-spec v1.9.0 h1:mW0X6ELiJ8UCwpk1nJRxNxJbfW9ZchyC1Y3cN6S9KWM=
+github.com/elastic/package-spec v1.9.0/go.mod h1:KzGTSDqCkdhmL1IFpOH2ZQNSSE9JEhNtndxU3ZrQilA=
 github.com/elazarl/goproxy v0.0.0-20180725130230-947c36da3153 h1:yUdfgN0XgIJw7foRItutHYUIhlcKzcSf5vDpdhQAKTc=
 github.com/elazarl/goproxy v0.0.0-20180725130230-947c36da3153/go.mod h1:/Zj4wYkgs4iZTTu3o/KG3Itv/qCCa8VVMlb3i9OVuzc=
 github.com/emicklei/go-restful v0.0.0-20170410110728-ff4f55a20633/go.mod h1:otzb+WCGbkyDHkqmQmT5YD2WR4BBwUdeQoFo8l/7tVs=