chore(deps): update actions/checkout action to v4 (#2357)

Author: renovate-bot

.github/workflows/ci.yaml

@@ -11,7 +11,7 @@ jobs:
       matrix:
         java: [8, 11]
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
     - uses: actions/setup-java@v1
       with:
         java-version: ${{matrix.java}}
@@ -27,7 +27,7 @@ jobs:
       run: |
         git config --global core.autocrlf false
         git config --global core.eol lf
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
     - uses: actions/setup-java@v1
       with:
         java-version: 8
@@ -55,7 +55,7 @@ jobs:
       matrix:
         java: [8, 11]
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
     - uses: actions/setup-java@v1
       with:
         java-version: ${{matrix.java}}
@@ -65,7 +65,7 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
     - uses: actions/setup-java@v1
       with:
         java-version: 11
@@ -77,7 +77,7 @@ jobs:
   clirr:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
     - uses: actions/setup-java@v1
       with:
         java-version: 8

.github/workflows/downstream.yaml

@@ -132,7 +132,7 @@ jobs:
         - workflow-executions
         - workflows
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
     - uses: actions/setup-java@v3
       with:
         distribution: zulu