update GitHub Actions to golang 1.19

.github/workflows/lint.yaml

@@ -14,7 +14,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-go@v2
         with:
-          go-version: '1.18'
+          go-version: '1.19'
       - uses: golangci/golangci-lint-action@v3.1.0
         with:
           version: v1.45.2

.github/workflows/test.yaml

@@ -19,7 +19,7 @@ jobs:
     steps:
     - uses: actions/setup-go@v2
       with:
-        go-version: '1.18'
+        go-version: '1.19'
 
     - uses: actions/checkout@v2
 
@@ -38,8 +38,8 @@ jobs:
     strategy:
       matrix:
         go_version:
+        - '1.18'
         - '1.17'
-        - '1.16'
 
     steps:
     - uses: actions/setup-go@v2