remove go1.21 from ci build

Signed-off-by: cpanato <[email protected]>

.github/workflows/build.yaml

@@ -8,26 +8,19 @@ on:
 jobs:
 
   build:
-    strategy:
-      fail-fast: false
-      matrix:
-        go-version:
-          - '1.21'
-          - '1.22'
-
-    name: Build ${{ matrix.go-version }}
+    name: Build 1.22
     runs-on: ubuntu-latest
 
     steps:
       - uses: actions/checkout@0ad4b8fadaa221de15dcec353f45205ec38ea70b # v4.1.4
       - uses: actions/setup-go@cdcb36043654635271a94b9a6d1392de5bb323a7 # v5.0.1
         with:
-          go-version: ${{ matrix.go-version }}
+          go-version: '1.22'
           check-latest: true
 
       - uses: golang/govulncheck-action@3a32958c2706f7048305d5a2e53633d7e37e97d0 # v1
         with:
-          go-version-input: ${{ matrix.go-version }}
+          go-version-input: '1.22'
 
       - run: |
           go build ./...