chore(deps): update golang docker tag to v1.26.3 (#211)

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

Author: renovate[bot]

Dockerfile

@@ -1,5 +1,5 @@
 # Build the manager binary
-FROM --platform=$BUILDPLATFORM golang:1.26.1-bookworm@sha256:ab3d6955bbc813a0f3fdf220c1d817dd89c0b3f283777db8ece4a32fe7858edd AS builder
+FROM --platform=$BUILDPLATFORM golang:1.26.3-bookworm@sha256:252599aeb51ad60b83e4d8821802068127c528c707cb7dd7afd93be057c6011c AS builder
 ARG TARGETARCH
 
 WORKDIR /workspace