chore(ci): Update Go to 1.25 and upgrade golangci-lint (#46)

* chore(ci): Update Go to 1.25 and upgrade golangci-lint

This commit updates the GitHub Actions CI workflow to add support for the
upcoming Go 1.25 release and upgrades the linting tools.

The build and test jobs now run against Go versions 1.24 and 1.25, dropping
support for the older Go 1.22. This aligns with the standard practice of
supporting the two latest major Go releases, ensuring the project remains
compatible with the current language toolchain.

Additionally, the `golangci-lint` job is updated:
- The Go version for the lint job is set to 1.25.
- The `golangci/golangci-lint-action` is upgraded from v2.1.6 to v2.5.0
  to leverage the latest linters, performance improvements, and bug fixes.

* Changing go.mod to 1.24, that is the oldest supported version

Author: FranciscoKurpiel

.github/workflows/ci.yml

@@ -12,7 +12,7 @@ jobs:
   build:
     strategy:
       matrix:
-        go: [1.22, 1.24]
+        go: [1.24, 1.25]
     name: build
     runs-on: ubuntu-latest
     steps:
@@ -27,7 +27,7 @@ jobs:
   test:
     strategy:
       matrix:
-        go: [1.22, 1.24]
+        go: [1.24, 1.25]
     name: test
     runs-on: ubuntu-latest
     steps:
@@ -42,8 +42,8 @@ jobs:
   golangci:
     strategy:
       matrix:
-        go: [1.24]
-        lint: [v2.1.6]
+        go: [1.25]
+        lint: [v2.5.0]
     name: lint
     runs-on: ubuntu-latest
     steps:

go.mod

@@ -1,5 +1,5 @@
 module github.com/simplesurance/proteus
 
-go 1.22
+go 1.24
 
 require golang.org/x/exp v0.0.0-20220722155223-a9213eeb770e