use go1.19 explicitly in all workflows

.github/workflows/tests.yaml

@@ -35,13 +35,16 @@ jobs:
       BUILD_HOSTNAME: ${{ secrets.BUILD_HOSTNAME }}
       BUILD_USERNAME: ${{ secrets.BUILD_USERNAME }}
       BUILD_KEY: ${{ secrets.BUILD_KEY }}
-    #strategy:
+
-    #  matrix:
-    #    go-version: [1.16.x, 1.17.x, 1.18.x]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
 
+      - name: Set up Go
+        uses: actions/setup-go@v4
+        with:
+          go-version: 1.19.7
+
       # Passed experience with GHA has taught me to store variables in files instead of passing them as variables.
       - name: Output variables to files
         run: |
@@ -85,12 +88,13 @@ jobs:
       ETH_HTTP_PATH: "go-ethereum:8545"
     runs-on: ubuntu-latest
     steps:
+      - uses: actions/checkout@v2
+      - name: Set up Go
+        uses: actions/setup-go@v4
+        with:
+          go-version: 1.19.7
       - name: Create GOPATH
         run: mkdir -p /tmp/go
-      - uses: actions/setup-go@v3
-        with:
-          go-version: "1.19.x"
-          check-latest: true
       - uses: actions/checkout@v2
         with:
           path: "./ipld-eth-server"
@@ -153,12 +157,13 @@ jobs:
       ETH_HTTP_PATH: "go-ethereum:8545"
     runs-on: ubuntu-latest
     steps:
+      - uses: actions/checkout@v2
+      - name: Set up Go
+        uses: actions/setup-go@v4
+        with:
+          go-version: 1.19.7
       - name: Create GOPATH
         run: mkdir -p /tmp/go
-      - uses: actions/setup-go@v3
-        with:
-          go-version: "1.19.x"
-          check-latest: true
       - uses: actions/checkout@v2
         with:
           path: "./ipld-eth-server"