Promote network error logging to Warning across all HTTP enrichers

Src/PackageGuard.Core/GitHubRepositoryRiskEnricher.cs

@@ -269,6 +269,11 @@ await Task.WhenAll(releaseDataTask, readmeTask, issueDataTask, contributorDataTa
                 LastReleaseAt = releaseData.LastReleaseAt
             };
         }
+        catch (HttpRequestException ex) when (ex.StatusCode == System.Net.HttpStatusCode.Forbidden)
+        {
+            logger.LogWarning(ex, "Failed to fetch GitHub repository risk metadata from {RepositoryApiRoot}", repositoryApiRoot);
+            return null;
+        }
         catch (Exception ex)
         {
             logger.LogDebug(ex, "Failed to fetch GitHub repository risk metadata from {RepositoryApiRoot}", repositoryApiRoot);

Src/PackageGuard.Core/LicenseUrlRiskEnricher.cs

@@ -40,7 +40,7 @@ public async Task EnrichAsync(PackageInfo package)
         }
         catch (Exception ex)
         {
-            logger.LogDebug(ex, "Failed to validate license URL {LicenseUrl} for {Name} {Version}", package.LicenseUrl, package.Name, package.Version);
+            logger.LogWarning(ex, "Failed to validate license URL {LicenseUrl} for {Name} {Version}", package.LicenseUrl, package.Name, package.Version);
             package.HasValidLicenseUrl = false;
             package.HasValidatedLicenseUrl = true;
         }

Src/PackageGuard.Core/Npm/NpmRegistryMetadataFetcher.cs

@@ -313,8 +313,8 @@ private async Task FetchDownloadCountAsync(PackageInfo package)
         }
         catch (Exception ex)
         {
-            logger.LogDebug("Failed to fetch download count for {Name} {Version}: {Error}",
-                package.Name, package.Version, ex.Message);
+            logger.LogWarning(ex, "Failed to fetch download count for {Name} {Version}",
+                package.Name, package.Version);
         }
     }