fix: pin base go image to 1.19.9

1.19.10 includes a change on linked libraries that's messing up our manager binary

see golang/go#47257 and golang/go#57328
(issues are closed, but the error is the same)

Author: kirederik

Dockerfile

@@ -1,5 +1,5 @@
 # Build the manager binary
-FROM --platform=$TARGETPLATFORM golang:1.19 as builder
+FROM --platform=$TARGETPLATFORM golang:1.19.9 as builder
 ARG TARGETARCH
 ARG TARGETOS