build(deps): update golang docker tag to v1.21.6 #1219

All 118 tests pass, 12 skipped in 2s

130 tests ±0 118 ✔️ ±0 2s ⏱️ ±0s
  13 suites ±0   12 💤 ±0
    1 files ±0     0 ❌ ±0

Results for commit ff3e96b. ± Comparison against earlier commit bb33ac7.