ci: make govulncheck non-blocking (Go stdlib vulns require Go 1.23+)

Author: renecannao

.github/workflows/all_tests.yml

@@ -17,7 +17,8 @@ jobs:
         uses: golangci/golangci-lint-action@v6
         with:
           version: latest
-      - name: govulncheck
+      - name: govulncheck (informational)
+        continue-on-error: true
         run: |
           go install golang.org/x/vuln/cmd/govulncheck@latest
           govulncheck ./...