Update web, use centrally defined version (#6500)

bin/rpkg.macros

@@ -2,6 +2,10 @@ function meshtastic_version {
     meshtastic_version=$(python3 bin/buildinfo.py short)
     echo -n "$meshtastic_version"
 }
+function web_version {
+    web_version=$(cat bin/web.version)
+    echo -n "$web_version"
+}
 function git_commits_num {
     total_commits=$(git rev-list --all --count)
     echo -n "$total_commits"

bin/web.version

@@ -0,0 +1 @@
+2.6.0