Previously deserializing assumed that open_blocks had enough capacity to
deserialize all blocks. It appears that this is not always the case and
that open blocks can overflow.

This commit will realloc s->open_blocks if the current capacity is not
big enough.

Fixes tree-sitter-grammars#114
Fixes neovim/neovim#25164

Tree sitter generated parsers are different if you build on arm vs x86.
This was causing the ci test to fail since I'm using an m1 mac, but the
ci tests are using x86.

Rebuilding in docker to fix that.