Bump dependabot-omnibus from 27ffaa7 to 8b4e7c7 in /updater (#692)

Bumps [dependabot-omnibus](https://github.com/dependabot/dependabot-core) from `27ffaa7` to `8b4e7c7`.
- [Release notes](https://github.com/dependabot/dependabot-core/releases)
- [Commits](dependabot/dependabot-core@27ffaa7...8b4e7c7)

---
updated-dependencies:
- dependency-name: dependabot-omnibus
  dependency-type: direct:production
...

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

updater/Gemfile.lock

@@ -1,6 +1,6 @@
 GIT
   remote: https://github.com/dependabot/dependabot-core.git
-  revision: 27ffaa71005ca913efa339a7218692482af39088
+  revision: 8b4e7c7c59ff502de5fe6d2a9f20807aa8710cdd
   branch: main
   specs:
     dependabot-bundler (0.220.0)
@@ -78,17 +78,17 @@ GEM
       public_suffix (>= 2.0.2, < 6.0)
     ast (2.4.2)
     aws-eventstream (1.2.0)
-    aws-partitions (1.782.0)
-    aws-sdk-codecommit (1.56.0)
-      aws-sdk-core (~> 3, >= 3.176.0)
+    aws-partitions (1.785.0)
+    aws-sdk-codecommit (1.57.0)
+      aws-sdk-core (~> 3, >= 3.177.0)
       aws-sigv4 (~> 1.1)
-    aws-sdk-core (3.176.1)
+    aws-sdk-core (3.177.0)
       aws-eventstream (~> 1, >= 1.0.2)
       aws-partitions (~> 1, >= 1.651.0)
       aws-sigv4 (~> 1.5)
       jmespath (~> 1, >= 1.6.1)
-    aws-sdk-ecr (1.61.0)
-      aws-sdk-core (~> 3, >= 3.176.0)
+    aws-sdk-ecr (1.62.0)
+      aws-sdk-core (~> 3, >= 3.177.0)
       aws-sigv4 (~> 1.1)
     aws-sigv4 (1.6.0)
       aws-eventstream (~> 1, >= 1.0.2)
@@ -127,9 +127,9 @@ GEM
     mini_mime (1.1.2)
     multi_xml (0.6.0)
     netrc (0.11.0)
-    nokogiri (1.15.2-arm64-darwin)
+    nokogiri (1.15.3-arm64-darwin)
       racc (~> 1.4)
-    nokogiri (1.15.2-x86_64-linux)
+    nokogiri (1.15.3-x86_64-linux)
       racc (~> 1.4)
     octokit (6.1.1)
       faraday (>= 1, < 3)