CI: bump GitHub Actions to Node.js 24 versions

Silence the deprecation warnings reported on
https://github.com/syoyo/tinygltf/actions/runs/25610558215 by upgrading
all `actions/checkout` usages from v1/v2/v3/v4 to v5 (Node 24 runtime)
and the CodeQL actions from v2 to v3.

msys2/setup-msys2 stays at v2 — it's the latest tag.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

.github/workflows/c-cpp.yml

@@ -14,7 +14,7 @@ jobs:
 
   #  steps:
   #    - name: Checkout
-  #      uses: actions/checkout@v1
+  #      uses: actions/checkout@v5
 
   #    - name: Build
   #      run: |
@@ -40,7 +40,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v5
 
       - name: Build
         run: |
@@ -60,7 +60,7 @@ jobs:
     # https://help.github.com/en/actions/reference/software-installed-on-github-hosted-runners
     steps:
       - name: Checkout
-        uses: actions/checkout@v1
+        uses: actions/checkout@v5
       - name: Configure
         run: |
           mkdir build
@@ -78,7 +78,7 @@ jobs:
     name: Buld with gcc
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v5
     - name: build
       run: |
         g++ -std=c++11 -o loader_example loader_example.cc
@@ -118,7 +118,7 @@ jobs:
     name: Buld with gcc + rapidjson
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v5
     - name: build
       run: |
         git clone https://github.com/Tencent/rapidjson
@@ -151,7 +151,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v5
       - name: Build
         run: |
             sudo apt-get update
@@ -169,7 +169,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v1
+        uses: actions/checkout@v5
       - name: Build
         run: |
             clang++ -std=c++11 -g -O0 -o loader_example loader_example.cc