[gdbm] Try mirrors first (#47272)

ports/gdbm/portfile.cmake

@@ -1,6 +1,6 @@
 vcpkg_download_distfile(ARCHIVE
-    URLS "https://ftp.gnu.org/gnu/gdbm/gdbm-${VERSION}.tar.gz"
-         "https://ftpmirror.gnu.org/gdbm/gdbm-${VERSION}.tar.gz"
+    URLS "https://ftpmirror.gnu.org/gdbm/gdbm-${VERSION}.tar.gz"
+         "https://ftp.gnu.org/gnu/gdbm/gdbm-${VERSION}.tar.gz"
          "https://www.mirrorservice.org/sites/ftp.gnu.org/gnu/gdbm/gdbm-${VERSION}.tar.gz"
     FILENAME "gdbm-${VERSION}.tar.gz"
     SHA512 401ff8c707079f21da1ac1d6f4714a87f224b6f41943078487dc891be49f51fd1ac7a32fd599aae0fad185f2c6ba7432616d328fd6aaab068eb54db9562ff7fa

ports/gdbm/vcpkg.json

@@ -1,6 +1,7 @@
 {
   "name": "gdbm",
   "version": "1.24",
+  "port-version": 1,
   "description": "GDBM is a library of database functions that use extensible hashing and works similar to the standard UNIX dbm.",
   "homepage": "https://www.gnu.org.ua/software/gdbm/gdbm.html",
   "license": "GPL-3.0-only",

versions/baseline.json

@@ -3186,7 +3186,7 @@
     },
     "gdbm": {
       "baseline": "1.24",
-      "port-version": 0
+      "port-version": 1
     },
     "gdcm": {
       "baseline": "3.0.24",

versions/g-/gdbm.json

@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "e0402af6ea114205282de7f19abbb88f45bc5bc0",
+      "version": "1.24",
+      "port-version": 1
+    },
     {
       "git-tree": "6f1a4f9089dcb8097ecdf38fda0274e2f19c6294",
       "version": "1.24",