Bump actions/checkout from 2 to 3 (#16405)

.github/workflows/cffconvert.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out a copy of the repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Check whether the citation metadata from CITATION.cff is valid
         uses: citation-file-format/cffconvert-github-action@2.0.0

.github/workflows/publish-c-apidocs.yml

@@ -24,7 +24,7 @@ jobs:
     name: Generate C/C++ API docs
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - name: Install doxygen and dependencies
         run: |
           sudo apt update

.github/workflows/publish-java-apidocs.yml

@@ -23,7 +23,7 @@ jobs:
     name: Generate Java docs
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - name: Set up JDK 11
         uses: actions/setup-java@v3
         with:

.github/workflows/publish-python-apidocs.yml

@@ -24,7 +24,7 @@ jobs:
     name: Generate Python API docs
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - name: Install tools
         run: |
           sudo apt-get update