Update actions/checkout action to v6 (branch_9x)

Author: solrbot

.github/workflows/bin-solr-test.yml

@@ -24,7 +24,7 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
 
     - uses: ./.github/actions/prepare-for-build
 

.github/workflows/docker-test.yml

@@ -27,7 +27,7 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
 
     - uses: ./.github/actions/prepare-for-build
 

.github/workflows/gradle-extraction-check.yml

@@ -21,7 +21,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
 
       - uses: ./.github/actions/prepare-for-build
 

.github/workflows/gradle-precommit.yml

@@ -18,7 +18,7 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
 
     - uses: ./.github/actions/prepare-for-build
 

.github/workflows/solrj-test.yml

@@ -21,7 +21,7 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
 
     - uses: ./.github/actions/prepare-for-build
 

.github/workflows/validate-changelog.yml

@@ -18,7 +18,7 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
       with:
         fetch-depth: 0