Correct typo in session validity constant name

A typographical error was found and corrected in the constant name for session validity. The correct name of the constant should be 'oid4vciSessionValidity'. The correction has been applied on two instances within the codebase.

auth/api/iam/api.go

@@ -62,7 +62,7 @@ const httpRequestContextKey = "http-request"
 // TODO: Might want to make this configurable at some point
 const accessTokenValidity = 15 * time.Minute
 
-const oid4vicSessionValidity = 15 * time.Minute
+const oid4vciSessionValidity = 15 * time.Minute
 
 //go:embed assets
 var assets embed.FS
@@ -834,5 +834,5 @@ func createOAuth2BaseURL(webDID did.DID) (*url.URL, error) {
 }
 
 func (r Wrapper) oid4vciSssionStore() storage.SessionStore {
-	return r.storageEngine.GetSessionDatabase().GetStore(oid4vicSessionValidity, "oid4vci")
+	return r.storageEngine.GetSessionDatabase().GetStore(oid4vciSessionValidity, "oid4vci")
 }