[TESTS] increase test-sqlite log level to Trace

It does not pollute the output because they go to sqlite-log/gitea.log
and it may provide clues for debugging. When trying to figure out a
problem in production, Debug is likely to be used but in a development
environment a very fine grain log is the most useful. If that's really
too much noise, the lines can be trimmed by removing all those with [T].

(cherry picked from commit 666b02eb9d)
(cherry picked from commit b69e4d3058)
(cherry picked from commit 0c1aecd7ec)
(cherry picked from commit 0304e41345)
(cherry picked from commit 4bcc7e02ce)
(cherry picked from commit 98364235f2)

tests/sqlite.ini.tmpl

@@ -90,7 +90,7 @@ LEVEL                = Info
 COLORIZE             = true
 
 [log.file]
-LEVEL                = Debug
+LEVEL                = Trace
 
 [security]
 PASSWORD_HASH_ALGO = argon2