chore(tools): build golangci-lint with Go 1.24

- hack/tools/go.mod: set go 1.24.0 to match repo target
- hack/tools/Makefile: bump golangci-lint to v1.60.3 to ensure it's built with Go ≥ 1.24 and fix CI error:
  “the Go language version (go1.23) used to build golangci-lint is lower than the targeted Go version (1.24.0)”

Author: bryan-cox

hack/tools/Makefile

@@ -45,7 +45,8 @@ ifeq ($(OS), windows)
 	MDBOOK_EXTRACT_COMMAND := unzip -d /tmp
 endif
 
-GOLANGCI_LINT_VERSION := v1.55.2
+# Use a golangci-lint built with Go >= 1.24 to match repo go.mod
+GOLANGCI_LINT_VERSION := v1.60.3
 ## --------------------------------------
 ## Tooling Binaries
 ## --------------------------------------

hack/tools/go.mod

@@ -1,6 +1,6 @@
 module sigs.k8s.io/cluster-api-provider-aws/hack/tools
 
-go 1.23.8
+go 1.24.0
 
 require (
 	github.com/a8m/envsubst v1.4.2