chore(deps): update actions/checkout action to v4

Author: renovate[bot]

.github/workflows/actionlint.yml

@@ -13,7 +13,7 @@ jobs:
     name: actionlint with reviewdog
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
 
       - name: actionlint
         uses: reviewdog/action-actionlint@v1.37.0

.github/workflows/build-image.yml

@@ -27,7 +27,7 @@ jobs:
       PAPER_COMMIT: ${{ steps.paper-commit.outputs.PAPER_COMMIT }}
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
 
       - name: Get Paper commit
         id: paper-commit
@@ -49,7 +49,7 @@ jobs:
 
       - name: clone Paper
         if: steps.cache-paperclip.outputs.cache-hit != 'true'
-        uses: actions/checkout@v3
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
         with:
           repository: PaperMC/Paper
           path: Paper
@@ -85,7 +85,7 @@ jobs:
       matrix: ${{ steps.set-matrix.outputs.matrix }}
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
 
       - name: Set Base Image matrix
         id: set-matrix
@@ -110,10 +110,10 @@ jobs:
         base_img: ${{ fromJSON(needs.base_img_matrix.outputs.matrix) }}
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
 
       - name: clone Paper
-        uses: actions/checkout@v3
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
         with:
           repository: PaperMC/Paper
           path: Paper
@@ -261,7 +261,7 @@ jobs:
         jdk: ["openjdk", "temurin"]
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
 
       - name: Install dependencies
         run: |

.github/workflows/validate-renovate.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
       - uses: actions/setup-node@v3
 
       - name: install