fix: ensure image can be built on m1 macos

When running any of the image build  make targets on an m1 macos, it fails due to
the following error: qemu-x87_64: Could not open '/lib64/ld-linux-x86-64.so.2

Specify platform to ensure build uses the correct architecture.

Dockerfile

@@ -1,4 +1,4 @@
-FROM registry.access.redhat.com/ubi9-minimal:9.1.0 AS builder
+FROM --platform=linux/amd64 registry.access.redhat.com/ubi9-minimal:9.1.0 AS builder
 
 RUN microdnf install -y tar gzip make which git
 
@@ -14,7 +14,7 @@ COPY . ./
 RUN go mod vendor 
 RUN make binary
 
-FROM registry.access.redhat.com/ubi9-minimal:9.1.0
+FROM --platform=linux/amd64 registry.access.redhat.com/ubi9-minimal:9.1.0
 
 COPY --from=builder /workspace/kas-fleet-manager /usr/local/bin/