build: update CI+release version to Go 1.25.3

We also update the go.mod files to pin to Go 1.24.9.

.github/workflows/main.yml

@@ -40,7 +40,7 @@ env:
 
   # If you change this please also update GO_VERSION in Makefile (then run
   # `make lint` to see where else it needs to be updated as well).
-  GO_VERSION: 1.25.2
+  GO_VERSION: 1.25.3
 
 jobs:
   static-checks:

.github/workflows/release.yaml

@@ -12,7 +12,7 @@ defaults:
 env:
   # If you change this please also update GO_VERSION in Makefile (then run
   # `make lint` to see where else it needs to be updated as well).
-  GO_VERSION: 1.25.2
+  GO_VERSION: 1.25.3
 
 jobs:
   ########################