fate: update ref files for gray pixel formats changes

tests/ref/fate/filter-pixfmts-pad

@@ -16,10 +16,10 @@ gbrp14le            deb2c3af6b48faa52f6a1f6590a0cdf7
 gbrp16le            a6156d1a37e05ee621b2a343fb158bd6
 gbrp9le             9e827f438e081d334a6cae7e282698b0
 gray                ddc663a0491df3959d9c5795dceaa72e
-gray10le            fcec0e9ca335941047bf624d3ad39765
-gray12le            f9ebea57dd9931fd833a278f2e5fa38b
+gray10le            e6559c1c8c05ce89f44b465573db44e7
+gray12le            1e6c6757658c7ae8a1f830432c5b7722
 gray16le            468bda6155bdc7a7a20c34d6e599fd16
-gray9le             d06fab97364d7d480232426facfc362c
+gray9le             f8f3dfe31ca5fcba828285bceefdab9a
 nv12                381574979cb04be10c9168540310afad
 nv21                0fdeb2cdd56cf5a7147dc273456fa217
 rgb0                78d500c8361ab6423a4826a00268c908

tests/ref/fate/sws-pixdesc-query

@@ -49,6 +49,8 @@ isNBPS:
   gray10le
   gray12be
   gray12le
+  gray9be
+  gray9le
   nv20be
   nv20le
   p010be
@@ -118,6 +120,7 @@ isBE:
   gray10be
   gray12be
   gray16be
+  gray9be
   nv20be
   p010be
   p016be
@@ -396,6 +399,8 @@ Gray:
   gray12le
   gray16be
   gray16le
+  gray9be
+  gray9le
   ya16be
   ya16le
   ya8