fix(steps-guix): add gdbm-1.8.3 before avahi and enable avahi dbm support

steps-guix/gdbm-1.8.3/pass1.sh

@@ -0,0 +1,28 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+src_prepare() {
+    default
+}
+
+src_configure() {
+    local host_triplet
+    host_triplet="$(gcc -dumpmachine)"
+
+    PATH="${PREFIX}/bin:/usr/bin:/bin" \
+    ./configure \
+        --prefix="${PREFIX}" \
+        --libdir="${LIBDIR}" \
+        --includedir="${PREFIX}/include" \
+        --host="${host_triplet}" \
+        --build="${host_triplet}" \
+        --enable-static \
+        --enable-shared
+}
+
+src_compile() {
+    default_src_compile
+}
+
+src_install() {
+    default_src_install
+}

steps-guix/gdbm-1.8.3/sources

@@ -0,0 +1 @@
+f https://ftp.gnu.org/gnu/gdbm/gdbm-1.8.3.tar.gz cc340338a2e28b40058ab9eb5354a21d53f88a1582ea21ba0bb185c37a281dc9 gdbm-1.8.3.tar.gz