Update package version to 9.21.18

pkg.info

@@ -1,9 +1,11 @@
 name: bind
 description: A complete, highly portable implementation of the Domain Name System (DNS) protocol
-version: 9.21.17
+version: 9.21.18
 revision: 1
 url: https://www.isc.org/bind/
 license: MPL2
+maintainers:
+  - [email protected]
 architecture: any
 type: source
 depends:
@@ -22,14 +24,17 @@ depends:
   - liburcu
   - libuv
   - libxml2
+  - lmdb
   - openssl
   - readline
+  - sysusers
   - xz-utils
   - zlib
 make_depends:
   - meson
+  - python-sphinx
 downloads:
   - url: https://ftp.isc.org/isc/bind9/${BPM_PKG_VERSION}/bind-${BPM_PKG_VERSION}.tar.xz
     extract_to: ${BPM_SOURCE}
     extract_strip_components: 1
-    checksum: 3cefdbc795f6347aff11af478dded6f036ff7b3a00f9ca3c9d0e80f0deeb0d05
+    checksum: b2a5f01ed7fedcb84b9df4ae78208ed51ceed1733f37fb9ea649026ec83d9f59