[CI] Ensure toolchain set before caching applied

.github/workflows/test_and_deploy.yml

@@ -40,14 +40,21 @@ jobs:
         with:
           python-version: ${{ matrix.python-version }}
 
-      # Configure Rust for 32-bit builds
-      # NOTE: install_loader/rust-toolchain.toml now used to set toolchain and target architecture
+      # To get around setup-rust-toolchain@v1 not detecting install_loader/rust-toolchain.toml
+      # since it is in a subfolder, copy it out to the root directory
+      - name: Copy rust-toolchain.toml for actions-rust-lang/setup-rust-toolchain
+        run: cp ./install_loader/rust-toolchain.toml .
 
-      # Caching for Rust
-      - name: Cache rust builds
-        uses: Swatinem/rust-cache@v2
-        with:
-          workspaces: install_loader
+      # 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
 
       # Run Python Deploy Script
       # This also installs and scans .exe with virustotal on Windows (to try prevent .exe virus false positives)