v0.12.0-rc5

What's Changed

• chore: update to golangci-lint 1.50.1 by @rootulp in #1309
• feat: add testRandBlob CLI for testground tests by @Bidon15 in #1311
• feat!: adapt tx inclusion proofs to use share inclusion proofs by @rootulp in #1276
• chore(deps): Bump actions/cache from 3.2.3 to 3.2.4 by @dependabot in #1316
• chore: make Count and Export methods idempotent by @cmwaters in #1297
• feat!: Add a block validity rule that all PFB transactions must have valid signatures by @evan-forbes in #1300
• chore!: use versioned proto packages by @cmwaters in #1306
• docs: add QGB verify command docs by @sweexordious in #1287
• chore(deps): Bump docker/build-push-action from 3 to 4 by @dependabot in #1317
• doc: document NMT wrapper in prepare_proposal by @sweexordious in #1039

Full Changelog: v0.12.0-rc4...v0.12.0-rc5