sort crates before splitting them into groups

this is useful so that crates always get routed to a specific group for a given version of the source code, which means that jobs for each batch can be reliably retried individually

scripts/ci/gitlab/check-each-crate.sh

@@ -15,7 +15,8 @@ groups_total="$2"
 
 readarray -t workspace_crates < <(\
   cargo tree --workspace --depth 0 | \
-  awk '{ if (length($1) == 0 || substr($1, 1, 1) == "[") { skip } else { print $1 } }'
+  awk '{ if (length($1) == 0 || substr($1, 1, 1) == "[") { skip } else { print $1 } }' | \
+  sort
 )
 
 crates_total=${#workspace_crates[*]}