ci(deps): update docker.io/library/golang:1.21.1 docker digest to 196…

…00fd (#598)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Dockerfile

@@ -1,5 +1,5 @@
 # Build the manager binary
-FROM docker.io/library/golang:1.21.1@sha256:c416ceeec1cdf037b80baef1ccb402c230ab83a9134b34c0902c542eb4539c82 as builder
+FROM docker.io/library/golang:1.21.1@sha256:19600fdcae402165dcdab18cb9649540bde6be7274dedb5d205b2f84029fe909 as builder
 ARG GOPROXY
 ARG TARGETOS
 ARG TARGETARCH