Fix long path errors on Windows demos

Both the WIN32-MSVC and WIN32-MingW demos
are failing due to long file paths. This is
because of a transitive dependency path which is
submodules further extending the path length. Enabling
windows long path support fixes this.

.github/workflows/kernel-demos.yml

diff --git a/.github/workflows/kernel-demos.yml b/.github/workflows/kernel-demos.yml
index 9371e9c..e120ace 100644
--- a/.github/workflows/kernel-demos.yml
+++ b/.github/workflows/kernel-demos.yml
@@ -13,6 +13,10 @@
     name: WIN32 MSVC
     runs-on: windows-latest
     steps:
+      - name: Enable long paths on Windows
+        if: runner.os == 'Windows'
+        run: git config --system core.longpaths true
+
       - name: Checkout the FreeRTOS/FreeRTOS Repository
         uses: actions/checkout@v4.1.1
         with:
@@ -42,6 +46,10 @@
     name: WIN32 MingW
     runs-on: windows-latest
     steps:
+      - name: Enable long paths on Windows
+        if: runner.os == 'Windows'
+        run: git config --system core.longpaths true
+
       - name: Checkout the FreeRTOS/FreeRTOS Repository
         uses: actions/checkout@v4.1.1
         with: