With ci gosec linter

[nickytd]

This PR add gosec linter check.

Add gosec linter check

[gardener-robot-ci-3]

This PR proposes changes that would break the pipeline definition:

kube-rbac-proxy-watcher-with-ci-gosec-linter: Traceback (most recent call last):
  File "/usr/lib/python3.12/site-packages/concourse/replicator.py", line 141, in render
    definition_descriptor = self._render(definition_descriptor)
                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/site-packages/concourse/replicator.py", line 185, in _render
    'definition': factory.create_pipeline_definition(),
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/site-packages/concourse/factory.py", line 83, in create_pipeline_definition
    variant = self._create_variant(
              ^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/site-packages/concourse/factory.py", line 138, in _create_variant
    variant._traits_dict = self._create_traits(raw_dict, variant_name)
                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/site-packages/concourse/factory.py", line 190, in _create_traits
    name: TraitsFactory.create(
          ^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/site-packages/concourse/model/traits/__init__.py", line 58, in create
    raise ModelValidationError('no such trait: ' + str(name))
model.base.ModelValidationError: no such trait: assets

[gardener-robot-ci-2]

The pipeline-definition has been fixed.