manager: Fix pagination limit for issue list

It turns out that `None` does not disable pagination, it just uses the
default limit.  Set an obscenely high limit to ensure we get the full
list.

techtree-manager/src/collect.rs

@@ -13,7 +13,7 @@ pub async fn collect_tree(
                 // We also want the closed issues
                 state: Some(forgejo_api::structs::IssueListIssuesQueryState::All),
                 // No pagination
-                limit: None,
+                limit: Some(10000),
                 // Only issues
                 r#type: Some(forgejo_api::structs::IssueListIssuesQueryType::Issues),
                 ..Default::default()
@@ -49,7 +49,7 @@ pub async fn collect_tree(
                 &meta.issue.repository.name,
                 &issue.to_string(),
                 forgejo_api::structs::IssueListIssueDependenciesQuery {
-                    limit: None,
+                    limit: Some(10000),
                     ..Default::default()
                 },
             )