Upgrade to go1.20

Author: ChristianZaccaria

.github/workflows/e2e_tests.yaml

@@ -68,7 +68,7 @@ jobs:
       - name: Set Go
         uses: actions/setup-go@v3
         with:
-          go-version: v1.19
+          go-version: v1.20
 
       - name: Set up gotestfmt
         uses: gotesttools/gotestfmt-action@v2

go.mod

@@ -1,6 +1,6 @@
 module github.com/project-codeflare/codeflare-sdk
 
-go 1.19
+go 1.20
 
 require (
 	github.com/onsi/gomega v1.27.10