package/bubblewrap: disable tests

Disable tests to avoid the following build failure on mips32:

[9/10] Compiling C object tests/try-syscall.p/try-syscall.c.o
FAILED: tests/try-syscall.p/try-syscall.c.o
/home/autobuild/autobuild/instance-11/output-1/host/bin/mipsel-buildroot-linux-musl-gcc -Itests/try-syscall.p -Itests -I../tests -fdiagnostics-color=always -Wall -Winvalid-pch -Wextra -O3 -D_GNU_SOURCE -Werror=shadow -Werror=empty-body -Werror=strict-prototypes -Werror=missing-prototypes -Werror=implicit-function-declaration -Werror=pointer-arith -Werror=init-self -Werror=missing-declarations -Werror=return-type -Werror=overflow -Werror=int-conversion -Werror=incompatible-pointer-types -Werror=misleading-indentation -Werror=missing-include-dirs -Werror=aggregate-return -Werror=switch-default -Wswitch-enum -Wno-sign-compare -Wno-error=sign-compare -Wno-missing-field-initializers -Wno-error=missing-field-initializers -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -O1 -g0 -MD -MQ tests/try-syscall.p/try-syscall.c.o -MF tests/try-syscall.p/try-syscall.c.o.d -o tests/try-syscall.p/try-syscall.c.o -c ../tests/try-syscall.c
../tests/try-syscall.c:34:5: error: #error "Unknown MIPS ABI"
   34 | #   error "Unknown MIPS ABI"
      |     ^~~~~

Fixes:
 - http://autobuild.buildroot.org/results/cf0365354fc8c16e5871d561daae0fa5039d0bee

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Acked-by: Adrian Perez de Castro <aperez@igalia.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

package/bubblewrap/bubblewrap.mk

@@ -17,7 +17,8 @@ BUBBLEWRAP_CONF_OPTS = \
 	-Dzsh_completion=disabled \
 	-Dman=disabled \
 	-Dpython=$(HOST_DIR)/bin/python \
-	-Drequire_userns=false
+	-Drequire_userns=false \
+	-Dtests=false
 
 ifeq ($(BR2_PACKAGE_BASH_COMPLETION),y)
 BUBBLEWRAP_CONF_OPTS += \