[stable/testlink] Release 0.4.8 (#1077)
[stable/testlink] Release 0.4.8 (#1077)

* testlink: update to `bitnami/testlink:1.9.16-r5`
* testlink: bump chart version to `0.4.8`

GaneshSPatil/charts,rimusz/helm-charts,mluedke/charts,sstarcher/charts,lachie83/charts,trobert2/charts-1,jainishshah17/charts,caiwenhao/charts,mlaccetti/charts,oleh-ozimok/charts,trobert2/charts-1,lachie83/charts,kachkaev/charts,kachkaev/charts,lachie83/charts,caiwenhao/charts,kachkaev/charts,viglesiasce/charts,mluedke/charts,viglesiasce/charts,sd2k/charts,escardin/charts,ledor473/charts,eicnix/charts,lachie83/charts,rimusz/helm-charts,sd2k/charts,sstarcher/charts,mlaccetti/charts,helm/charts,GaneshSPatil/charts,smileisak/charts,trobert2/charts-1,jainishshah17/charts,helm/charts,GaneshSPatil/charts,eicnix/charts,oleh-ozimok/charts,samisms/charts,smelchior/charts,ledor473/charts,samisms/charts,mlaccetti/charts,rimusz/helm-charts,viglesiasce/charts,barklyprotects/charts,grugnog/charts,oleh-ozimok/charts,smileisak/charts,eicnix/charts,helm/charts,grugnog/charts,GaneshSPatil/charts,jainishshah17/charts,barklyprotects/charts,samisms/charts,barklyprotects/charts,sstarcher/charts,mluedke/charts,rimusz/helm-charts,caiwenhao/charts,ledor473/charts,grugnog/charts,smileisak/charts,smelchior/charts,helm/charts,sd2k/charts,sd2k/charts,smelchior/charts,escardin/charts,escardin/charts