Fix issues spotted during 1.3.7 fdroid build (#10570)

* bridge.yml: Explicitly install cargo-expand of certain version

@linsui spotted this trying to fix the build failure of 1.3.7
on f-droid:

https://gitlab.com/fdroid/fdroiddata/-/merge_requests/18766

* flutter-build.yml: drop workarounds for flutter 3.13

@fufesou has removed them from build_fdroid.sh in #10040 but
forgot to remove them in main flutter_build.yml. flutter 3.13
is not used anymore, and those who want to build the old version
using flutter 3.13 can happily check out the appropriate commit
from Git history.

* Bump vcpkg baseline to 2025.01.13

@linsui addressed the missing vcpkg-tools.json file inside vcpkg
revision (microsoft side, not rustdesk's!) by updating the vcpkg
baseline.

.github/workflows/bridge.yml

@@ -6,6 +6,7 @@ on:
   workflow_call:
 
 env:
+  CARGO_EXPAND_VERSION: "1.0.95"
   FLUTTER_VERSION: "3.22.3"
   FLUTTER_RUST_BRIDGE_VERSION: "1.80.1"
   RUST_VERSION: "1.75" # https://github.com/rustdesk/rustdesk/discussions/7503
@@ -75,6 +76,7 @@ jobs:
       - name: Install flutter rust bridge deps
         shell: bash
         run: |
+          cargo install cargo-expand --version ${{ env.CARGO_EXPAND_VERSION }} --locked
           cargo install flutter_rust_bridge_codegen --version ${{ env.FLUTTER_RUST_BRIDGE_VERSION }} --features "uuid" --locked
           pushd flutter && sed -i -e 's/extended_text: 14.0.0/extended_text: 13.0.0/g' pubspec.yaml && flutter pub get && popd