feat: update GitHub workflows to use actions/checkout@v4 and action-gh-release@v2

Author: chandralegend

.github/workflows/release.yml

@@ -10,6 +10,9 @@ on:
     tags:
       - 'v*'
 
+permissions:
+  contents: write
+
 jobs:
   build-and-release:
     name: Build and Create Release
@@ -18,7 +21,7 @@ jobs:
       VERSION: ${{ github.event.inputs.version }}
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Install dependencies
       run: |
@@ -45,7 +48,7 @@ jobs:
 
     - name: Create Release
       id: create_release
-      uses: softprops/action-gh-release@v1
+      uses: softprops/action-gh-release@v2
       with:
         name: Nutshell ${{ env.VERSION }}
         tag_name: v${{ env.VERSION }}

.github/workflows/tests.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Install dependencies
       run: |

README.md

@@ -1,3 +1,4 @@
+```bash
 nutshell/
 ├── src/
 │   ├── core/
@@ -27,6 +28,7 @@ nutshell/
 ├── tests/                   # Test suite
 ├── Makefile
 └── README.md
+```
 
 # Nutshell