Use at least go1.15.11 and remove unused cache step from workflows (#185

)

Signed-off-by: John Watson <[email protected]>

.github/workflows/integration-test.yaml

@@ -13,20 +13,13 @@ jobs:
     steps:
 
     - name: Set up Go
-      uses: actions/setup-go@v1
+      uses: actions/setup-go@v2
       with:
-        go-version: 1.15
+        go-version: ~1.15.11
       id: go
 
     - name: Check out code into the Go module directory
       uses: actions/checkout@v1
 
-    - name: Go module cache
-      id: go-mod-cache
-      uses: actions/cache@v1
-      with:
-        path: ~/go/pkg/mod
-        key: go-mod-cache
-
     - name: Integration Test
       run: make integration-test

.github/workflows/unit-test.yaml

@@ -13,21 +13,14 @@ jobs:
     steps:
 
     - name: Set up Go
-      uses: actions/setup-go@v1
+      uses: actions/setup-go@v2
       with:
-        go-version: 1.15
+        go-version: ~1.15.11
       id: go
 
     - name: Check out code into the Go module directory
       uses: actions/checkout@v1
 
-    - name: Go module cache
-      id: go-mod-cache
-      uses: actions/cache@v1
-      with:
-        path: ~/go/pkg/mod
-        key: go-mod-cache
-
     - name: Build
       run: go install -v ./...