chore: Update builder and base tags (trustyai-explainability#242)

* Update builder and base tags

Builder changed from go-toolset:1.19 -> 1.20
Base image from ubi-mininal:8.9 -> latest
Go module version 1.19 -> 1.20

* fix: RHOAI overlay YAML linting

Dockerfile

@@ -1,5 +1,5 @@
 # Build the manager binary
-FROM registry.access.redhat.com/ubi8/go-toolset:1.19 as builder
+FROM registry.access.redhat.com/ubi8/go-toolset:1.20 as builder
 ARG TARGETOS
 ARG TARGETARCH
 
@@ -26,7 +26,7 @@ RUN CGO_ENABLED=0 GOOS=${TARGETOS:-linux} GOARCH=${TARGETARCH} go build -a -o ma
 
 # Use distroless as minimal base image to package the manager binary
 # Refer to https://github.com/GoogleContainerTools/distroless for more details
-FROM registry.access.redhat.com/ubi8/ubi-minimal:8.9
+FROM registry.access.redhat.com/ubi8/ubi-minimal:latest
 WORKDIR /
 COPY --from=builder /workspace/manager .
 USER 65532:65532

config/overlays/rhoai/kustomization.yaml

@@ -2,4 +2,4 @@
 apiVersion: kustomize.config.k8s.io/v1beta1
 kind: Kustomization
 resources:
-  - ../../base
+  - ../../base

go.mod

@@ -1,6 +1,6 @@
 module github.com/trustyai-explainability/trustyai-service-operator
 
-go 1.19
+go 1.20
 
 require (
 	github.com/kserve/kserve v0.11.2