Bump to kubecost-network-costs:v0.16.8 (kubecost#2558)

* Enables Dependabot to scan all `yaml` files for outdated images at the
following directories

Signed-off-by: thomasvn <[email protected]>

* Minor string fix

Signed-off-by: thomasvn <[email protected]>

* Remove quotes from strings

Signed-off-by: thomasvn <[email protected]>

* Bump kubecost-network-costs image version

Signed-off-by: thomasvn <[email protected]>

---------

Signed-off-by: thomasvn <[email protected]>

Author: thomasvn

Diff for: cost-analyzer/values.yaml

@@ -731,7 +731,7 @@ networkCosts:
   enabled: false
   podSecurityPolicy:
     enabled: false
-  image: gcr.io/kubecost1/kubecost-network-costs:v0.16.7
+  image: gcr.io/kubecost1/kubecost-network-costs:v0.16.8
   imagePullPolicy: Always
   updateStrategy:
     type: RollingUpdate