The `Bitbucket` strategy checks download or tag pages but the content
is now fetched separately on page load, so the strategy is failing for
all related formulae. This updates the generated strategy URLs to
fetch the page content instead, which works as expected.
The `Bitbucket` strategy currently matches versions from tag
tarball links on a project's `downloads/?tab=tags` page. It appears
that Bitbucket now uses a hash as the filename on this page instead
of the tag name, so the existing regex no longer matches.
This adds an alternative regex to match versions from the tag name
element (e.g., `<td class="name">example-1.2.3</td>`), which will fix
version matching in this scenario.
