Add insecure-dep test task to Makefile and CI (#8464)

#8106


  I added `insecure-deps` target to Makefile and a new step into `check-code` section of test-suite CI workflow that uses the former.

That bash multiliner is not ideal, I'd prefer a cargo plugin instead but none exists.

I also changed Cargo.toml to test that the new CI check works. Once we see a pipeline fails, I revert the change.


Co-Authored-By: Alexander Uvizhev <uvizhe@gmail.com>

Co-Authored-By: chonghe <44791194+chong-he@users.noreply.github.com>

Co-Authored-By: dapplion <35266934+dapplion@users.noreply.github.com>

.github/workflows/test-suite.yml

@@ -319,6 +319,8 @@ jobs:
           bins: cargo-audit,cargo-deny
     - name: Check formatting with cargo fmt
       run: make cargo-fmt
+    - name: Check dependencies for unencrypted HTTP links
+      run: make insecure-deps
     - name: Lint code for quality and style with Clippy
       run: make lint-full
     - name: Certify Cargo.lock freshness