build(deps): update dependency @renovatebot/kbpgp to v4 (#32491)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package.json

@@ -163,7 +163,7 @@
     "@opentelemetry/semantic-conventions": "1.27.0",
     "@qnighy/marshal": "0.1.3",
     "@renovatebot/detect-tools": "1.1.0",
-    "@renovatebot/kbpgp": "3.0.2",
+    "@renovatebot/kbpgp": "4.0.0",
     "@renovatebot/osv-offline": "1.5.10",
     "@renovatebot/pep440": "3.1.0",
     "@renovatebot/ruby-semver": "4.0.0",