Update librocksdb-sys from v0.6.1+6.28.2 to v0.6.3+6.28.2

[mnaamani]

• [x] Fixes #4754
• [x] Bump joystream-node (client) version
• [x] Update runtime upgrade test workflow to skip if runtime/src/lib.rs and runtime/Cargo.toml are un-changed (hack to look for change of spec_version)

[vercel[bot]]

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1 Ignored Deployment

| Name | Status | Preview | Updated (UTC) | | :--- | :----- | :------ | :------ | | **pioneer-testnet** | ⬜️ Ignored ([Inspect](https://vercel.com/joystream/pioneer-testnet/CuscT46U6s2aVSPAzGb1WQ6bZTwR)) | | May 11, 2023 0:09am |

[mnaamani]

@ignazio-bovo I tested syncing with old node and then switching to new node, works flawlessly.