I've noticed multiple creators on CurseForge and MCPEDL releasing updates for their resource packs without making any changes other than increasing the version number.
In their changelogs, they claim they've added support for the latest versions.
I suspect this practice is intended to artificially increase revenue on these platforms by making users believe they need to update resource packs they've already imported.
In contrast to Java Edition, resource packs on MCBE don’t require regular updates for new Minecraft versions, as the format version does not change. An update is only needed if the vanilla resource you’re basing your work on is updated.