ci: fix to Go 1.18

Author: aeneasr

.github/workflows/ci.yaml

@@ -77,7 +77,7 @@ jobs:
           fetch-depth: 2
       - uses: actions/setup-go@v2
         with:
-          go-version: ^1.18
+          go-version: '~1.18'
       - run: go list -json > go.list
       - name: Run nancy
         uses: sonatype-nexus-community/[email protected]
@@ -162,7 +162,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v2
         with:
-          go-version: '^1.18'
+          go-version: '~1.18'
       - name: Install selfservice-ui-react-native
         uses: actions/checkout@v2
         with: