tests: Run on native32 as well

Trouble with [21531] indicates that running tests on native is
insufficient to catch native32 trouble; this should catch that kind of
issue earlier.

[21531]: RIOT-OS/RIOT#21531

Author: chrysn

.github/workflows/build.yml

@@ -102,7 +102,7 @@ jobs:
         env:
           BUILD_IN_DOCKER: 1
           DOCKER_IMAGE: ${{ env.DOCKER_REGISTRY }}/riotbuild:latest
-          BOARDS: "arduino-uno esp32-wroom-32 hifive1b msb-430h native samr21-xpro"
+          BOARDS: "arduino-uno esp32-wroom-32 hifive1b msb-430h native native32 samr21-xpro"
 
       - name: GNU microbit qemu test
         run: >
@@ -127,7 +127,7 @@ jobs:
           TOOLCHAIN: llvm
           BUILD_IN_DOCKER: 1
           DOCKER_IMAGE: ${{ env.DOCKER_REGISTRY }}/riotbuild:latest
-          BOARDS: "native samr21-xpro"
+          BOARDS: "native native32 samr21-xpro"
 
       - name: Rust build test
         run: |
@@ -143,15 +143,15 @@ jobs:
           # Not all of them are actually available; still using the "canonical"
           # list of representative boards above to keep this stable whil Rust
           # support expands
-          BOARDS: "arduino-uno esp32-wroom-32 hifive1b msb-430h native samr21-xpro"
+          BOARDS: "arduino-uno esp32-wroom-32 hifive1b msb-430h native native32 samr21-xpro"
 
       - name: C++ build test
         run: |
           make -C RIOT/tests/sys/cpp11_condition_variable BUILDTEST_MAKE_REDIRECT='' buildtest
         env:
           BUILD_IN_DOCKER: 1
           DOCKER_IMAGE: ${{ env.DOCKER_REGISTRY }}/riotbuild:latest
-          BOARDS: "esp32-wroom-32 hifive1b native samr21-xpro"
+          BOARDS: "esp32-wroom-32 hifive1b native native32 samr21-xpro"
 
       - name: laze test
         run: |