Try to let rust auto configure toolchain/target architecture

Author: drojf

.github/workflows/test_and_deploy.yml

@@ -41,15 +41,13 @@ jobs:
           python-version: ${{ matrix.python-version }}
 
       # Configure Rust for 32-bit builds
-      #
-      # NOTE: Refer to install_loader/rust-toolchain.toml for the installed toolchain and target architecture
-      # Please use fixed versions of rust so that installs build consistently
-      # (So they don't randomly trigger Windows Defender)
-      #
-      # CACHE NOTE: This action also provides Github Actions caching of rust builds (uses Swatinem/rust-cache internally)
-      - name: Install and configure rust for 32-bit builds
-        uses: actions-rust-lang/setup-rust-toolchain@v1
-        working-directory: ./install_loader
+      # NOTE: install_loader/rust-toolchain.toml now used to set toolchain and target architecture
+
+      # Caching for Rust
+      - name: Cache rust builds
+        uses: Swatinem/rust-cache@v2
+        with:
+          workspaces: install_loader
 
       # Run Python Deploy Script
       # This also installs and scans .exe with virustotal on Windows (to try prevent .exe virus false positives)