Update release CI (#3295)

In the release CI and related scripts, when comparing and printing to the CI,
use the most recent **ancestor** tag(s) for the release branch rather than
the most recent one(s).

And fix the build_wamr_sdk.yml and build_wamr_lldb.yml CIs.

.github/workflows/build_wamr_sdk.yml

@@ -58,6 +58,12 @@ jobs:
           sudo rm ${basename}
           sudo mv wasi-sdk-* wasi-sdk
 
+      - name: download dependencies
+        run: |
+          cd ./wamr-app-framework/deps
+          ./download.sh
+        working-directory: wamr-sdk
+
       - name: generate wamr-sdk release
         run: |
           cd ./wamr-app-framework/wamr-sdk