Merge pull request #1355 from spring-cloud/dependabot/npm_and_yarn/docs/4.3.x/antora/collector-extension-1.0.3

Bump @antora/collector-extension from 1.0.0-alpha.3 to 1.0.3 in /docs

Author: olegz

docs/package.json

@@ -2,7 +2,7 @@
      "dependencies": {
          "antora": "3.2.0-alpha.11",
          "@antora/atlas-extension": "1.0.0-alpha.5",
-         "@antora/collector-extension": "1.0.0-alpha.3",
+         "@antora/collector-extension": "1.0.3",
          "@asciidoctor/tabs": "1.0.0-beta.6",
          "@springio/antora-extensions": "1.14.11",
          "@springio/asciidoctor-extensions": "1.0.0-alpha.18"