drop supports for Go 1.16 and 1.17

Update test.yaml

.github/workflows/test.yaml

@@ -8,19 +8,19 @@ on:
     - cron: "0 6 * * *"
 
 jobs:
-  lint: 
+  lint:
     runs-on: ubuntu-latest
     steps:
         - uses: actions/checkout@v2
         - name: Lint
           run: |
             make lint
-            
+
   go-client:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        goVer: ['1.16', '1.17', '1.18', '1.19', '1.20', '1.21']
+        goVer: ['1.18', '1.19', '1.20', '1.21']
     steps:
       - uses: actions/checkout@v2
       - name: Setup go ${{ matrix.goVer }}
@@ -42,7 +42,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        goVer: ['1.16', '1.17', '1.18', '1.19', '1.20', '1.21']
+        goVer: ['1.18', '1.19', '1.20', '1.21']
     steps:
       - uses: actions/checkout@v2
       - name: Setup go ${{ matrix.goVer }}
@@ -67,7 +67,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        goVer: ['1.16', '1.17', '1.18', '1.19', '1.20', '1.21']
+        goVer: ['1.18', '1.19', '1.20', '1.21']
     steps:
       - uses: actions/checkout@v2
       - name: Setup go ${{ matrix.goVer }}