Bump searchkick from 5.3.1 to 6.0.3

Bumps [searchkick](https://github.com/ankane/searchkick) from 5.3.1 to 6.0.3.
- [Changelog](https://github.com/ankane/searchkick/blob/master/CHANGELOG.md)
- [Commits](ankane/searchkick@v5.3.1...v6.0.3)

---
updated-dependencies:
- dependency-name: searchkick
  dependency-version: 6.0.3
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Gemfile.lock

@@ -498,7 +498,7 @@ GEM
     pp (0.6.3)
       prettyprint
     prettyprint (0.2.0)
-    prism (1.7.0)
+    prism (1.8.0)
     pry (0.15.2)
       coderay (~> 1.1)
       method_source (~> 1.0)
@@ -693,9 +693,8 @@ GEM
       tilt
     scout_apm (6.0.2)
       parser
-    searchkick (5.3.1)
-      activemodel (>= 6.1)
-      hashie
+    searchkick (6.0.3)
+      activemodel (>= 7.2)
     securerandom (0.4.1)
     selenium-webdriver (4.39.0)
       base64 (~> 0.2)