Update ubuntu-20.04 to ubuntu-latest

Author: kar-rahul-aws

.github/workflows/ci.yml

@@ -7,7 +7,7 @@ on:
   workflow_dispatch:
 jobs:
   formatting:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4.1.1
       - name: Check Formatting of FreeRTOS-Kernel Files

.github/workflows/formatting.yml

@@ -16,7 +16,7 @@ jobs:
     if: ${{ github.event.issue.pull_request &&
         ( ( github.event.comment.body == '/bot run uncrustify' ) ||
           ( github.event.comment.body == '/bot run formatting' ) ) }}
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     steps:
     - name: Apply Formatting Fix
       id: check-formatting

.github/workflows/kernel-checks.yml

@@ -5,7 +5,7 @@ on: [push, pull_request]
 jobs:
   kernel-checker:
     name: FreeRTOS Kernel Header Checks
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     steps:
       # Install python 3
       - name: Tool Setup

.github/workflows/unit-tests.yml

@@ -3,7 +3,7 @@ on: [push, pull_request]
 
 jobs:
   run:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     steps:
     - name: Checkout Parent Repository
       uses: actions/checkout@v4.1.1