Use debian:12 base image (#99)

Signed-off-by: 1gtm <1gtm@appscode.com>

Author: 1gtm

Makefile

@@ -61,8 +61,8 @@ BIN_PLATFORMS    := $(DOCKER_PLATFORMS)
 OS   := $(if $(GOOS),$(GOOS),$(shell go env GOOS))
 ARCH := $(if $(GOARCH),$(GOARCH),$(shell go env GOARCH))
 
-BASEIMAGE_PROD   ?= gcr.io/distroless/static-debian11
-BASEIMAGE_DBG    ?= debian:bullseye
+BASEIMAGE_PROD   ?= gcr.io/distroless/static-debian12
+BASEIMAGE_DBG    ?= debian:12
 
 IMAGE            := $(REGISTRY)/$(BIN)
 VERSION_PROD     := $(VERSION)