Bump ubi9.4 (#532)

Author: jotak

Dockerfile

@@ -41,7 +41,7 @@ COPY pkg/ pkg/
 
 RUN CGO_ENABLED=0 GOARCH=$TARGETARCH go build -ldflags "$LDFLAGS" -mod vendor -o plugin-backend cmd/plugin-backend.go
 
-FROM  --platform=$TARGETPLATFORM registry.access.redhat.com/ubi9/ubi-minimal:9.3
+FROM  --platform=$TARGETPLATFORM registry.access.redhat.com/ubi9/ubi-minimal:9.4
 
 COPY --from=web-builder /opt/app-root/web/dist ./web/dist
 COPY --from=go-builder /opt/app-root/plugin-backend ./