disable svd kwarg const-prop test on v1.6 and later

Author: thchr

test/svd.jl

@@ -71,11 +71,12 @@ using StaticArrays, Test, LinearAlgebra
         @testinf svd(m_sing2'; full=Val(true)) \ v2 ≈ svd(Matrix(m_sing2'); full=true) \ Vector(v2)
         @testinf svd(m_sing2; full=Val(true)) \ m23' ≈ svd(Matrix(m_sing2); full=true) \ Matrix(m23')
         @testinf svd(m_sing2'; full=Val(true)) \ m23 ≈ svd(Matrix(m_sing2'); full=true) \ Matrix(m23)
-        if VERSION >= v"1.5-DEV"
+        if v"1.6" > VERSION >= v"1.5-DEV"
             # Test that svd of rectangular matrix is inferred.
             # Note the placement of @inferred brackets is important.
             #
-            # This only seems to work on >= v"1.5" due to unknown compiler improvements.
+            # This only seems to work on v"1.5" due to unknown compiler improvements; seems
+            # to have stopped working again on v"1.6" and later?
             svd_full_false(A) = svd(A, full=false)
             @test @inferred(svd_full_false(m_sing2)).S ≈ svd(Matrix(m_sing2)).S
         end