[PR]: chore(go): update to go version 1.25 + update pipeline versions (#281)

### 📝 Summary

update to go version 1.25 + update pipeline versions

### 🧩 Type of change

- [x] 🔧 CLI / Go code
- [ ] 📦 Helm chart
- [ ] 🧱 Terraform module
- [ ] 📝 Documentation
- [x] 🧪 Test or CI change
- [ ] ♻️ Refactor / cleanup

### ⚠️ Is this a breaking change?

- [ ] Yes, this change breaks existing functionality (explain in summary)

### 🧪 Testing

- [ ] CI passed
- [ ] Manually tested (local/dev cluster)
- [ ] Unit tested
- [ ] Not tested (explain why in comments)

### 🔗 Related Issues / Tickets

_No response_

### ✅ Checklist

- [ ] Code compiles and passes all tests
- [ ] Linting and style checks pass
- [ ] Comments added for complex logic
- [ ] Documentation updated (if applicable)

### 📎 Additional Context (optional)

_No response_

Co-authored-by: matthias.huether_ext <Matthias.Huether_ext@external.mail.schwarz>
Reviewed-on: https://kubara.git.onstackit.cloud/STACKIT/kubara/pulls/281

Author: Matthias_Huether

.forgejo/workflows/ci-pr-checks.yaml

@@ -15,15 +15,15 @@ on:
   workflow_dispatch:
 
 env:
-  GO_VERSION: "1.24"
+  GO_VERSION: "1.25"
   CODE_PATH: ${{ github.workspace }}/go-binary
   REPORT_DIR: ${{ github.workspace }}/reports
   RENDER_DIR: ${{ github.workspace }}/rendered
   OUTPUT_GENERATED_DIR: ${{ github.workspace }}/output-generated
-  GOSEC_VERSION: "v2.22.8"
-  GOLANGCI_LINT_VERSION: "v2.5.0"
+  GOSEC_VERSION: "v2.22.11"
+  GOLANGCI_LINT_VERSION: "v2.8.0"
   ARTIFACT_RETENTION_DAYS: "15"
-  HELM_VERSION: "v3.19.1"
+  HELM_VERSION: "v4.1.0"
   KUBECONFORM_VERSION: "v0.7.0"
 
 permissions:

go-binary/go.mod

@@ -1,6 +1,6 @@
 module kubara
 
-go 1.24.0
+go 1.25
 
 require (
 	github.com/Masterminds/sprig/v3 v3.3.0