feat: add French ISP logos, Guacamole and generic bastion icon

French ISPs: Orange (#FF7900, keywords: orange/sosh/livebox),
OVH (#123F6D, keywords: ovh/ovhcloud/kimsufi/soyoustart).
Free, SFR and Bouygues are absent from simple-icons.

Bastion: Apache Guacamole (#578B34, keyword: guacamole) + generic
shield-lock icon (#1E3A8A) for bastion/jumphost/teleport/bastillion.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

README.md

@@ -286,6 +286,8 @@ Multiple logos can appear simultaneously if several keywords match.
 | Virtualisation | Docker | `docker` |
 | NAS | Synology | `synology`, `dsm` |
 | NAS | TrueNAS | `truenas`, `freenas` |
+| French ISP | Orange | `orange`, `sosh`, `livebox` |
+| French ISP | OVH | `ovh`, `ovhcloud`, `kimsufi`, `soyoustart` |
 | Network | Ubiquiti / UniFi | `ubiquiti`, `unifi`, `usg`, `udm` |
 | Network | MikroTik | `mikrotik`, `routeros` |
 | Network | Cisco | `cisco` |
@@ -297,6 +299,8 @@ Multiple logos can appear simultaneously if several keywords match.
 | Network | OpenWrt | `openwrt` |
 | Web / proxy | Apache | `apache`, `apache2`, `httpd` |
 | Web / proxy | Traefik | `traefik` |
+| Web / proxy | Apache Guacamole | `guacamole` |
+| Bastion | Bastion / jump host | `bastion`, `jumphost`, `jump host`, `jump server`, `teleport`, `bastillion` |
 | Auth / SSO | Authelia | `authelia` |
 | Auth / SSO | Keycloak | `keycloak` |
 | Auth / SSO | Authentik | `authentik` |