Fix expected RSS content

The publish date on the webp image is now different,
since we rebased onto a change in the preceding branch,
which correctly populates this EXIF field on the new
webp file.

This affects the order if the items in the RSS feed,
and the title of the RSS feed. (possibly that last part
is a bug? But it is not today's problem.)

tests/integration/test_demo_build.py

@@ -47,7 +47,7 @@ def test_gallery_rss(build, output_dir):
     parsed = rss_parser.Parser(xml=content).parse()
     # and the RSS contains gallery attributes:
     # TODO Should the title be the name of the gallery, not the final image in it?
-    assert parsed.title == 'Tesla conducts lg'
+    assert parsed.title == 'Tesla tower1 lg'
     assert parsed.version == '2.0'
     assert parsed.language == 'en'
     # TODO Should the gallery description contain the content of the index.txt file?
@@ -59,6 +59,11 @@ def test_gallery_rss(build, output_dir):
             link='https://example.com/galleries/demo/tesla4_lg.jpg',
             publish_date='Wed, 01 Jan 2014 00:01:00 GMT',
         ),
+        dict(
+            title='Tesla conducts lg',
+            link='https://example.com/galleries/demo/tesla_conducts_lg.webp',
+            publish_date='Wed, 01 Jan 2014 00:02:00 GMT',
+        ),
         dict(
             title='Tesla lightning1 lg',
             link='https://example.com/galleries/demo/tesla_lightning1_lg.jpg',
@@ -74,11 +79,6 @@ def test_gallery_rss(build, output_dir):
             link='https://example.com/galleries/demo/tesla_tower1_lg.jpg',
             publish_date='Wed, 01 Jan 2014 00:05:00 GMT',
         ),
-        dict(
-            title='Tesla conducts lg',
-            link='https://example.com/galleries/demo/tesla_conducts_lg.webp',
-            publish_date='Mon, 27 Mar 2023 18:18:55 GMT',
-        ),
     ]
     # TODO The use of 'zip' here is faulty.
     #      It silently stops at the length of the shortest iterable