chore(deps): update ruby docker tag to v3.3.6

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
ruby	final	patch	3.3.0 -> 3.3.6

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[github-actions]

Benchmark result: head (renovate/ruby-3.x)

ruby 3.3.1 (2024-04-23 revision c56cd86388) [x86_64-linux]
Warming up --------------------------------------
                      70.000 i/100ms
Calculating -------------------------------------
                      703.929 (± 1.4%) i/s -     21.140k in  30.038630s

[github-actions]

Benchmark result: base (main)

ruby 3.3.1 (2024-04-23 revision c56cd86388) [x86_64-linux]
Warming up --------------------------------------
                      70.000 i/100ms
Calculating -------------------------------------
                      704.365 (± 1.4%) i/s -     21.140k in  30.020621s