chore(CI): Update go version in CI to 1.19.x (kubeflow#1069)

Author: Tomcli

.github/workflows/kfp-tekton-unittests.yml

@@ -91,7 +91,7 @@ jobs:
     - name: Install Go
       uses: actions/setup-go@v2
       with:
-        go-version: 1.17.x
+        go-version: 1.19.x
     - name: Checkout code
       uses: actions/checkout@v2
     - name: "run go unit tests"
@@ -104,7 +104,7 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v2
         with:
-          go-version: 1.17.x
+          go-version: 1.19.x
       - name: Checkout code
         uses: actions/checkout@v2
       - name: "run go pipelineLoop unit tests"