change golang version in actions to 1.20

Signed-off-by: Andre Ferraz <andre.ferraz@loggi.com>

Author: Andre Ferraz

.github/workflows/ci-tests.yaml

@@ -18,7 +18,7 @@ jobs:
       - name: Setup Golang
         uses: actions/setup-go@v1
         with:
-          go-version: '1.18'
+          go-version: '1.20'
       - name: Download all Go modules
         run: |
           go mod download
@@ -68,7 +68,7 @@ jobs:
       - name: Setup Golang
         uses: actions/setup-go@v1
         with:
-          go-version: '1.18'
+          go-version: '1.20'
       - name: Run tests
         env:
           GNUPG_DISABLED: true