Update eclipse-temurin Docker tag to v21 {patch}

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
eclipse-temurin	final	major	17.0.8_7-jre-alpine -> 21-jre-alpine

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Configuration

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[codecov]

Codecov Report

Merging #739 (c63195e) into main (8ba712a) will not change coverage.
Report is 1 commits behind head on main.
The diff coverage is n/a.

@@            Coverage Diff            @@
##               main     #739   +/-   ##
=========================================
  Coverage     99.01%   99.01%           
  Complexity     1919     1919           
=========================================
  Files           227      227           
  Lines          4788     4788           
  Branches        186      186           
=========================================
  Hits           4741     4741           
  Misses           36       36           
  Partials         11       11           

Flag	Coverage Δ
app	99.44% <ø> (ø)
client	94.09% <ø> (ø)
testcontainers	97.68% <ø> (ø)

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[renovate]

Renovate Ignore Notification

Because you closed this PR without merging, Renovate will ignore this update. You will not get PRs for any future 21.x releases. But if you manually upgrade to 21.x then Renovate will re-enable minor and patch updates automatically.

If you accidentally closed this PR, or if you changed your mind: rename this PR to get a fresh replacement PR.