https-dns-proxy: update to 2026.05.06-1

https-dns-proxy: update to 2026.05.06-1

Maintainer: me
Compile tested: x86_64, Dell EMC Edge620, OpenWrt 25.12.4
Run tested: x86_64, Dell EMC Edge620, OpenWrt 25.12.4

Description:
Update to 2026.05.06 and add IP family option

  - Update PKG_VERSION to 2026.05.06
  - Update PKG_RELEASE to 1
  - Add PKG_CPE_ID for CVE tracking
  - Update PKG_MIRROR_HASH and PKG_SOURCE_VERSION

files/etc/config/https-dns-proxy:
  - Add comments for default options
  - Add new 'force_ip_family' option to control IP family for resolvers
  - Update default 'bootstrap_dns' to include IPv6 addresses

files/etc/init.d/https-dns-proxy:
  - Add DEFAULT_BOOTSTRAP4 and DEFAULT_BOOTSTRAP6 for family fallbacks
  - Change 'global_force_ipv6' to 'global_force_ip_family' for new option
  - Modify append_boot to filter bootstrap DNS by 'force_ip_family'
  - Implement fallback bootstrap DNS for forced IP families with no
    compatible configured servers
  - Change 'start_instance' to use 'force_ip_family' instead of
    'force_ipv6'
  - Ensure 'service_started' and 'service_stopped' always return 0 to
    prevent incorrect failure reports for `start`/`reload`/`restart`
    commands

files/etc/uci-defaults/50-https-dns-proxy-migrate-options.sh:
  - Migrate 'force_ipv6_resolvers' option to 'force_ip_family' option
  - Remove old 'force_ipv6_resolvers' option after migration

Signed-off-by: Stan Grishin <redacted>