ci: enable parallel testing

.github/workflows/ci.yml

@@ -235,4 +235,4 @@ jobs:
     - name: test
       run: |
         ${{ matrix.config_env }} ${{ matrix.runenv }} cmake --build build --target tests
-        ${{ matrix.config_env }} ${{ matrix.runenv }} ctest --test-dir build -Ttest -j1 --output-on-failure
+        ${{ matrix.config_env }} ${{ matrix.runenv }} ctest --test-dir build -Ttest -j8 --output-on-failure

.github/workflows/dist.yml

@@ -53,7 +53,7 @@ jobs:
       - name: make
         run: cmake --build build
       - name: make check
-        run: ctest --test-dir build -Ttest -j1 --output-on-failure
+        run: ctest --test-dir build -Ttest -j8 --output-on-failure
 
       - name: make package_source
         run: cmake --build build --target package_source
@@ -65,4 +65,4 @@ jobs:
       - name: re-make
         run: cd unpack/espeak-ng-* && cmake --build build
       - name: re-make check
-        run: cd unpack/espeak-ng-* && ctest --test-dir build -Ttest -j1 --output-on-failure
+        run: cd unpack/espeak-ng-* && ctest --test-dir build -Ttest -j8 --output-on-failure

.github/workflows/windows.yml

@@ -30,4 +30,4 @@ jobs:
       - name: make
         run: cmake --build build --config ${{ matrix.config }}
       - name: make check
-        run: ctest --test-dir build -Ttest -C ${{ matrix.config }} -j1 --output-on-failure
+        run: ctest --test-dir build -Ttest -C ${{ matrix.config }} -j8 --output-on-failure