Update Go to 1.20 and Nomad 1.4.4 in CI

Quotes in ci.yml are required to prevent YAML parsing errors. Otherwise Go 1.20 would be read as Go 1.2

.github/workflows/ci.yml

@@ -7,9 +7,9 @@ on:
     branches: [ main ]
 
 env:
-  GO_VERSION: 1.19
-  NOMAD_VERSION: 1.4.3
-  CNI_VERSION: 1.1.1
+  GO_VERSION: '1.20'
+  NOMAD_VERSION: '1.4.4'
+  CNI_VERSION: '1.1.1'
 
 jobs:
   compile:

.github/workflows/docker-image.yml

@@ -21,7 +21,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v3
         with:
-          go-version: 1.19
+          go-version: '1.20'
       - uses: actions/cache@v3
         with:
           path: |