Update the spec reference testsuite submodule (#3450)

* Update the spec reference testsuite submodule

This commit brings in recent updates to the spec test suite. Most of the
changes here were already fixed in `wasmparser` with some tweaks to
esoteric modules, but Wasmtime also gets a bug fix where where import
matching for the size of tables/memories is based on the current runtime
size of the table/memory rather than the original type of the
table/memory. This means that during type matching the actual value is
consulted for its size rather than using the minimum size listed in its
type.

* Fix now-missing directories in build script

tests/misc_testsuite/partial-init-memory-segment.wast

@@ -0,0 +1,35 @@
+(module $m
+  (memory (export "mem") 1)
+
+  (func (export "load") (param i32) (result i32)
+    local.get 0
+    i32.load8_u))
+
+(register "m" $m)
+
+(assert_trap
+  (module
+    (memory (import "m" "mem") 1)
+
+    ;; This is in bounds, and should get written to the memory.
+    (data (i32.const 0) "abc")
+
+    ;; Partially out of bounds. None of these bytes should get written, and
+    ;; instantiation should trap.
+    (data (i32.const 65530) "zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz")
+  )
+  "out of bounds"
+)
+
+;; The first data segment got written.
+(assert_return (invoke $m "load" (i32.const 0)) (i32.const 97))
+(assert_return (invoke $m "load" (i32.const 1)) (i32.const 98))
+(assert_return (invoke $m "load" (i32.const 2)) (i32.const 99))
+
+;; The second did not get partially written.
+(assert_return (invoke $m "load" (i32.const 65530)) (i32.const 0))
+(assert_return (invoke $m "load" (i32.const 65531)) (i32.const 0))
+(assert_return (invoke $m "load" (i32.const 65532)) (i32.const 0))
+(assert_return (invoke $m "load" (i32.const 65533)) (i32.const 0))
+(assert_return (invoke $m "load" (i32.const 65534)) (i32.const 0))
+(assert_return (invoke $m "load" (i32.const 65535)) (i32.const 0))