Redact the tile start byte position from test goldens (#2799)

diff --git a/tests/data/goldens/kodim03_23_animation.avif.xml b/tests/data/goldens/kodim03_23_animation.avif.xml
index d506ae9..0723c6f 100644
--- a/tests/data/goldens/kodim03_23_animation.avif.xml
+++ b/tests/data/goldens/kodim03_23_animation.avif.xml
@@ -126,15 +126,15 @@
   <Sample number="1" DTS="0" CTS="0" size="REDACTED" RAP="1" >
    <OBU size="REDACTED" type="seq_header" header_size="2" has_size_field="1" has_ext="0" temporalID="0" spatialID="0" sequence_width="768" sequence_height="512" still_picture="0" OperatingPointIdc="0" profile="0" level="4" bit_depth="8" monochrome="0" color_description_present_flag="0" color_primaries="2" transfer_characteristics="2" matrix_coefficients="2" color_range="1" chroma_subsampling_x="1" chroma_subsampling_y="1" chroma_sample_position="0" film_grain_params_present="0" />
    <OBU size="REDACTED" type="frame" header_size="4" has_size_field="1" has_ext="0" temporalID="0" spatialID="0" uncompressed_header_bytes="12" frame_type="key" refresh_frame_flags="255" show_frame="1" width="768" height="512" nb_tiles="2" >
-     <Tile number="0" start="19" size="REDACTED"/>
-     <Tile number="1" start="12994" size="REDACTED"/>
+     <Tile number="0" start="REDACTED" size="REDACTED"/>
+     <Tile number="1" start="REDACTED" size="REDACTED"/>
    </OBU>
   </Sample>
 
   <Sample number="2" DTS="1" CTS="1" size="REDACTED" RAP="0" >
    <OBU size="REDACTED" type="frame" header_size="4" has_size_field="1" has_ext="0" temporalID="0" spatialID="0" uncompressed_header_bytes="18" frame_type="inter" refresh_frame_flags="2" show_frame="1" width="768" height="512" nb_tiles="2" >
-     <Tile number="0" start="25" size="REDACTED"/>
-     <Tile number="1" start="9888" size="REDACTED"/>
+     <Tile number="0" start="REDACTED" size="REDACTED"/>
+     <Tile number="1" start="REDACTED" size="REDACTED"/>
    </OBU>
   </Sample>
 
diff --git a/tests/data/goldens/kodim03_23_animation_keyframes.avif.xml b/tests/data/goldens/kodim03_23_animation_keyframes.avif.xml
index 8823d73..50a91fa 100644
--- a/tests/data/goldens/kodim03_23_animation_keyframes.avif.xml
+++ b/tests/data/goldens/kodim03_23_animation_keyframes.avif.xml
@@ -124,16 +124,16 @@
   <Sample number="1" DTS="0" CTS="0" size="REDACTED" RAP="1" >
    <OBU size="REDACTED" type="seq_header" header_size="2" has_size_field="1" has_ext="0" temporalID="0" spatialID="0" sequence_width="768" sequence_height="512" still_picture="0" OperatingPointIdc="0" profile="0" level="4" bit_depth="8" monochrome="0" color_description_present_flag="0" color_primaries="2" transfer_characteristics="2" matrix_coefficients="2" color_range="1" chroma_subsampling_x="1" chroma_subsampling_y="1" chroma_sample_position="0" film_grain_params_present="0" />
    <OBU size="REDACTED" type="frame" header_size="4" has_size_field="1" has_ext="0" temporalID="0" spatialID="0" uncompressed_header_bytes="12" frame_type="key" refresh_frame_flags="255" show_frame="1" width="768" height="512" nb_tiles="2" >
-     <Tile number="0" start="19" size="REDACTED"/>
-     <Tile number="1" start="12994" size="REDACTED"/>
+     <Tile number="0" start="REDACTED" size="REDACTED"/>
+     <Tile number="1" start="REDACTED" size="REDACTED"/>
    </OBU>
   </Sample>
 
   <Sample number="2" DTS="1" CTS="1" size="REDACTED" RAP="1" >
    <OBU size="REDACTED" type="seq_header" header_size="2" has_size_field="1" has_ext="0" temporalID="0" spatialID="0" sequence_width="768" sequence_height="512" still_picture="0" OperatingPointIdc="0" profile="0" level="4" bit_depth="8" monochrome="0" color_description_present_flag="0" color_primaries="2" transfer_characteristics="2" matrix_coefficients="2" color_range="1" chroma_subsampling_x="1" chroma_subsampling_y="1" chroma_sample_position="0" film_grain_params_present="0" />
    <OBU size="REDACTED" type="frame" header_size="4" has_size_field="1" has_ext="0" temporalID="0" spatialID="0" uncompressed_header_bytes="12" frame_type="key" refresh_frame_flags="255" show_frame="1" width="768" height="512" nb_tiles="2" >
-     <Tile number="0" start="19" size="REDACTED"/>
-     <Tile number="1" start="8808" size="REDACTED"/>
+     <Tile number="0" start="REDACTED" size="REDACTED"/>
+     <Tile number="1" start="REDACTED" size="REDACTED"/>
    </OBU>
   </Sample>
 
diff --git a/tests/golden_test_common.sh b/tests/golden_test_common.sh
index e17e8d7..2465974 100755
--- a/tests/golden_test_common.sh
+++ b/tests/golden_test_common.sh
@@ -93,6 +93,7 @@
              -e 's/<Sample\(.*\) size="[0-9]*"/<Sample\1 size="REDACTED"/g' \
              -e 's/<SampleSizeEntry\(.*\) Size="[0-9]*"/<SampleSizeEntry\1 Size="REDACTED"/g' \
              -e 's/<OBU\(.*\) size="[0-9]*"/<OBU\1 size="REDACTED"/g' \
+             -e 's/<Tile\(.*\) start="[0-9]*"/<Tile\1 start="REDACTED"/g' \
              -e 's/<Tile\(.*\) size="[0-9]*"/<Tile\1 size="REDACTED"/g' \
             "$f"
   rm "$f.bak"