chore: bump _code_freeze workflow to v0.86.0 (#477)

Signed-off-by: oliver könig <okoenig@nvidia.com>
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: ko3n1g

.github/workflows/release-freeze.yml

@@ -21,7 +21,7 @@ on:
         default: true
 jobs:
   code-freeze:
-    uses: NVIDIA-NeMo/FW-CI-templates/.github/workflows/_code_freeze.yml@v0.25.2
+    uses: NVIDIA-NeMo/FW-CI-templates/.github/workflows/_code_freeze.yml@v0.86.0
     with:
       library-name: NeMo Run
       python-package: nemo_run