gopls/v0.15.2

This release fixes the following regressions in gopls@v0.15.0+.

• golang/go#66109: a crash when encountering a test file excluded via build tags, which also contained an invalid import of a main package. This could occur in a tools_test.go file implementing the common pattern for tool dependencies.
• golang/go#66145: spurious import errors in multi-root workspaces. In some scenarios, the new zero-config logic added in gopls@v0.15.0 resulted in inaccurate errors about missing imports. This could occur when module A has a local replace of module B, and A and B are open as a separate workspace folders.
• golang/go#66195: a crash when working on modules with a go directive of the form go a.b.c, when gopls was compiled with Go 1.20 or earlier.
• golang/go#66090: a crash when SignatureHelp is cancelled (found via telemetry)
• golang/go#66250: a crash in references when one of the package files is missing a package declaration (found via telemetry)

These last two crashes are worth highlighting. Both were found via the (off by default) automated crash reporting added in gopls@v0.15.0. Both were unlikely to get reported via GitHub issues, because they won't happen frequently enough for most LSP clients to notify the user. This is a perfect example of how telemetry can help us deliver a more reliable product than would be possible without automated reporting.