chore(deps): update nginx docker digest to dec7a90

Author: netic-renovate[bot]

pkg/helm/testdata/test-chart/values.yaml

@@ -11,7 +11,7 @@ image:
   # This sets the pull policy for images.
   pullPolicy: IfNotPresent
   # Overrides the image tag whose default is the chart appVersion.
-  tag: "@sha256:bc45d248c4e1d1709321de61566eb2b64d4f0e32765239d66573666be7f13349"
+  tag: "@sha256:dec7a90bd0973b076832dc56933fe876bc014929e14b4ec49923951405370112"
 
 # This is for the secretes for pulling an image from a private repository more information can be found here: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/
 imagePullSecrets: []