Discover the version from Git tag

.github/workflows/main.yml

@@ -28,7 +28,7 @@ jobs:
       - name: Build installer
         uses: nadeemjazmawe/inno-setup-action-cli@v6.0.5
         with:
-          filepath: "./mmrelay.iss"
+          filepath: "/DAppVersion=${{ github.ref_name }} ./mmrelay.iss"
 
       - name: Upload setup.exe to release
         uses: svenstaro/upload-release-action@v2

mmrelay.iss

@@ -4,7 +4,7 @@
 //WizardSmallImageFile=smallwiz.bmp
 
 AppName=Matrix <> Meshtastic Relay
-AppVersion=0.3.5
+AppVersion={#AppVersion}
 DefaultDirName={userpf}\MM Relay
 DefaultGroupName=MM Relay
 UninstallFilesDir={app}