Update GNUPG2_VERSION to 2.4.8-5

Author: joecorall

Dockerfile

@@ -46,7 +46,7 @@ ARG \
   # renovate: datasource=repology depName=debian_13/git
   GIT_VERSION=1:2.47.3-0+deb13u1 \
   # renovate: datasource=repology depName=debian_13/gnupg2
-  GNUPG2_VERSION=2.4.7-21 \
+  GNUPG2_VERSION=2.4.8-5 \
   # renovate: datasource=repology depName=debian_13/iproute2
   IPROUTE2_VERSION=6.15.0-1 \
   # renovate: datasource=repology depName=debian_13/ipset