build-unit-test-docker: update meson to 1.8.2

openbmc is currently on meson 1.8.0, but meson 1.8.2 is out and
the next yocto import will use that.  Go ahead and do the minor update
now.

OptionStore now requires an `is_cross` argument; set it to false.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: Ie6a3169b79d0dbb22e7f45cf06e883b6ad88b3dc
diff --git a/scripts/build-unit-test-docker b/scripts/build-unit-test-docker
index bd670f8..5ca80c4 100755
--- a/scripts/build-unit-test-docker
+++ b/scripts/build-unit-test-docker
@@ -949,7 +949,7 @@
         isoduration \
         isort \
         jsonschema \
-        meson==1.7.0 \
+        meson==1.8.2 \
         referencing \
         requests