Update dependency go to v1.24.3

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

Author: renovate[bot]

go.mod

@@ -2,7 +2,7 @@ module github.com/appuio/emergency-credentials-controller
 
 go 1.22
 
-toolchain go1.23.5
+toolchain go1.24.3
 
 require (
 	github.com/Masterminds/sprig/v3 v3.2.3