ci: add -fno-strict-aliasing to CTS build to fix 5 pre-existing Array test failures at -O3

The 5 Array.vxCreateArray failures (CHAR, INT8, UINT8, INT16, UINT16)
were caused by GCC -O3 strict-aliasing optimizations in the CTS test
code (own_verify_data_items casts between vx_uint8* and vx_char* etc.).

Debug (-O0) and -O2 builds pass all 20 Array tests. Only -O3 fails.
Adding -fno-strict-aliasing to the CTS build resolves the issue without
affecting rustVX performance.

Author: Kiriti

.github/workflows/conformance.yml

@@ -140,6 +140,8 @@ jobs:
           cd build
           cmake .. \
             -DCMAKE_BUILD_TYPE=Release \
+            -DCMAKE_C_FLAGS="-fno-strict-aliasing" \
+            -DCMAKE_CXX_FLAGS="-fno-strict-aliasing" \
             -DCMAKE_C_STANDARD_LIBRARIES="-lm" \
             -DCMAKE_CXX_STANDARD_LIBRARIES="-lm" \
             -DOPENVX_INCLUDES="${{ github.workspace }}/include;${{ github.workspace }}/OpenVX-cts/include" \