Bump actions/checkout from 6.0.2 to 6.0.3 (#537)

Bumps [actions/checkout](https://github.com/actions/checkout) from 6.0.2 to 6.0.3.
- [Release notes](https://github.com/actions/checkout/releases)
- [Commits](actions/checkout@v6.0.2...v6.0.3)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: 6.0.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

.github/workflows/benchmark.yml

@@ -46,7 +46,7 @@ jobs:
       BUNDLE_WITHOUT: sig
 
     steps:
-    - uses: actions/checkout@v6.0.2
+    - uses: actions/checkout@v6.0.3
 
     - name: Set up Ruby
       uses: ruby/setup-ruby@v1

.github/workflows/ci.yml

@@ -43,7 +43,7 @@ jobs:
       BUNDLE_WITHOUT: sig
 
     steps:
-      - uses: actions/checkout@v6.0.2
+      - uses: actions/checkout@v6.0.3
 
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1

.github/workflows/jruby_test.yml

@@ -26,7 +26,7 @@ jobs:
           - jruby-head
 
     steps:
-      - uses: actions/checkout@v6.0.2
+      - uses: actions/checkout@v6.0.3
 
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1

.github/workflows/push_gem.yml

@@ -34,7 +34,7 @@ jobs:
         with:
           egress-policy: audit
 
-      - uses: actions/checkout@0c366fd6a839edf440554fa01a7085ccba70ac98 # v5.0.1
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v5.0.1
 
       - name: Set up Ruby
         uses: ruby/setup-ruby@d5126b9b3579e429dd52e51e68624dda2e05be25 # v1.267.0

.github/workflows/sig.yml

@@ -16,7 +16,7 @@ jobs:
     env:
       BUNDLE_WITH: sig
     steps:
-      - uses: actions/checkout@v6.0.2
+      - uses: actions/checkout@v6.0.3
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with: