fix(ci): drop 'file' from verify step (not installed in maven base image)

The 'file' package isn't installed in maven:3.9.6-eclipse-temurin-21, so
'file target/...-runner' returned 127 and failed the verify step.
Use only 'ldd'; on a static binary ldd exits non-zero with 'not a
dynamic executable', which we suppress with '|| echo'.

.gitea/workflows/ci.yml

@@ -67,15 +67,9 @@ jobs:
       - name: Verify native binary
         run: |
           ls -la target/shot-crafter-calculator-1.0.0-runner
-          echo "--- file ---"
-          file target/shot-crafter-calculator-1.0.0-runner
-          echo "--- ldd ---"
-          if ldd target/shot-crafter-calculator-1.0.0-runner >/dev/null 2>&1; then
-            echo "WARNING: binary has dynamic dependencies:"
-            ldd target/shot-crafter-calculator-1.0.0-runner
-          else
-            echo "OK: binary is statically linked (no dynamic dependencies)."
-          fi
+          echo ""
+          echo "=== Library dependencies ==="
+          ldd target/shot-crafter-calculator-1.0.0-runner 2>&1 || echo "(not a dynamic executable -> static)"
 
       - name: Stage binary for Docker
         run: |