Revert "Temporarily disable "ledger" feature and Ledger tests on CI"

This reverts commit 9eacb99.

Author: ImplOfAnImpl

.github/workflows/build.yml

@@ -37,17 +37,17 @@ jobs:
             --default-toolchain $(python ./build-tools/cargo-info-extractor/extract.py --rust-version)
 
       - name: Build
-        run: cargo build --release --locked --features trezor
+        run: cargo build --release --locked --features trezor,ledger
 
       - name: Run tests
-        run: cargo test --release --workspace --features trezor
+        run: cargo test --release --workspace --features trezor,ledger
 
       - name: Run doc tests
-        run: cargo test --release --doc --features trezor
+        run: cargo test --release --doc --features trezor,ledger
 
       # This test is ignored, so it needs to run separately.
       - name: Run mixed_sighash_types test
-        run: cargo test --release mixed_sighash_types --features trezor
+        run: cargo test --release mixed_sighash_types --features trezor,ledger
 
       # This test is ignored, so it needs to run separately.
       - name: Run test_4opc_sequences test
@@ -89,17 +89,17 @@ jobs:
             --default-toolchain $(python ./build-tools/cargo-info-extractor/extract.py --rust-version)
 
       - name: Build
-        run: cargo build --release --locked --features trezor
+        run: cargo build --release --locked --features trezor,ledger
 
       - name: Run tests
-        run: cargo test --release --workspace --features trezor
+        run: cargo test --release --workspace --features trezor,ledger
 
       - name: Run doc tests
-        run: cargo test --release --doc --features trezor
+        run: cargo test --release --doc --features trezor,ledger
 
       # This test is ignored, so it needs to run separately.
       - name: Run mixed_sighash_types test
-        run: cargo test --release mixed_sighash_types --features trezor
+        run: cargo test --release mixed_sighash_types --features trezor,ledger
 
       # This test is ignored, so it needs to run separately.
       - name: Run test_4opc_sequences test
@@ -133,17 +133,17 @@ jobs:
             --default-toolchain $(python ./build-tools/cargo-info-extractor/extract.py --rust-version)
 
       - name: Build
-        run: cargo build --release --locked --features trezor
+        run: cargo build --release --locked --features trezor,ledger
 
       - name: Run tests
-        run: cargo test --release --workspace --features trezor
+        run: cargo test --release --workspace --features trezor,ledger
 
       - name: Run doc tests
-        run: cargo test --release --doc --features trezor
+        run: cargo test --release --doc --features trezor,ledger
 
       # This test is ignored, so it needs to run separately.
       - name: Run mixed_sighash_types test
-        run: cargo test --release mixed_sighash_types --features trezor
+        run: cargo test --release mixed_sighash_types --features trezor,ledger
 
       # This test is ignored, so it needs to run separately.
       - name: Run test_4opc_sequences test
@@ -293,7 +293,6 @@ jobs:
 
   # Build Ledger-specific tests and archive them
   run_tests_on_ledger_preparation:
-    if: false # Temporarily disabled for the v1.3.0 release
     runs-on: ubuntu-latest
     steps:
       - name: Checkout the core repository
@@ -339,7 +338,6 @@ jobs:
 
   # Run Ledger-specific tests on an emulator
   run_tests_on_ledger:
-    if: false # Temporarily disabled for the v1.3.0 release
     needs: run_tests_on_ledger_preparation
     runs-on: ubuntu-latest
     strategy: