Update GitHub actions

Signed-off-by: dkwon17-test <dakwon@redhat.com>

Author: dkwon17

.github/workflows/next-container-build.yaml

@@ -19,14 +19,14 @@ on:
 jobs:
 
   build-next-images:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
 
     outputs:
       git-sha: ${{ steps.git-sha.outputs.sha }}
 
     steps:
     - name: Checkout web-terminal-exec source code
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
 
     - name: Set output for Git short SHA
       id: git-sha

.github/workflows/pr-check.yaml

@@ -19,20 +19,20 @@ on:
 jobs:
   go:
     name: Check sources
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     steps:
     -
       name: Set up Go 1.x
-      uses: actions/setup-go@v2
+      uses: actions/setup-go@v5
       with:
-        go-version: 1.21.13
+        go-version: '1.21.13'
     -
       name: Check out code into the Go module directory
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
     -
       name: Cache go modules
       id: cache-mod
-      uses: actions/cache@v2
+      uses: actions/cache@v4
       with:
         path: ~/go/pkg/mod
         key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
@@ -80,7 +80,7 @@ jobs:
     steps:
     -
       name: Check out code into the Go module directory
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
     -
       name: Check if dockerimage build is working
       run: docker build -f ./build/Dockerfile .