chore: update the version of go-lru we use to the latest available (#1141)

We are now using v2.0.1 in the cve cache logic.
Unfortunately we are also using v0.5.4 indirectly, as it is required for gqlgen, see:
https://github.com/99designs/gqlgen/blob/e6114a2c6af22bcdc92180660a58e6125e7946ad/go.mod#L7

Signed-off-by: Andrei Aaron <aaaron@luxoft.com>

pkg/extensions/search/cve/trivy/cache.go

@@ -1,19 +1,19 @@
 package trivy
 
 import (
-	lru "github.com/hashicorp/golang-lru"
+	lru "github.com/hashicorp/golang-lru/v2"
 
 	cvemodel "zotregistry.io/zot/pkg/extensions/search/cve/model"
 	"zotregistry.io/zot/pkg/log"
 )
 
 type CveCache struct {
-	cache *lru.Cache
+	cache *lru.Cache[string, map[string]cvemodel.CVE]
 	log   log.Logger
 }
 
 func NewCveCache(size int, log log.Logger) *CveCache {
-	cache, _ := lru.New(size)
+	cache, _ := lru.New[string, map[string]cvemodel.CVE](size)
 
 	return &CveCache{cache: cache, log: log}
 }
@@ -23,12 +23,7 @@ func (cveCache *CveCache) Add(image string, cveMap map[string]cvemodel.CVE) {
 }
 
 func (cveCache *CveCache) Get(image string) map[string]cvemodel.CVE {
-	value, ok := cveCache.cache.Get(image)
-	if !ok {
-		return nil
-	}
-
-	cveMap, ok := value.(map[string]cvemodel.CVE)
+	cveMap, ok := cveCache.cache.Get(image)
 	if !ok {
 		return nil
 	}