fix: update workflow to use ubuntu-latest for consistency

Author: vignesh-gupta

.github/workflows/pr-checks.yml

@@ -10,7 +10,7 @@ env:
 jobs:
   linting:
     name: Lint
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     steps:
       - name: Checkout
         uses: actions/checkout@v3
@@ -23,7 +23,7 @@ jobs:
 
   type-check:
     name: Apps/Web Types
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     steps:
       - name: Checkout
         uses: actions/checkout@v3
@@ -36,7 +36,7 @@ jobs:
 
   build:
     name: Build
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     steps:
       - name: Checkout
         uses: actions/checkout@v3