ci: release workflow improvements

[umaucher]

Changes:

1. Skip release-verification if prepare-release fails - don't waste runner time on expensive build/test/coverage when tagging fails
2. Add git config to tag creation step - fixes 'empty ident name' error that was blocking releases

Motivation:

Sequential job dependencies ensure the full release pipeline only runs when tag creation succeeds.

[github-actions]

License Check Results

🚀 The license check job ran with the Bazel command:

bazel run --lockfile_mode=error //:license-check

Status: ⚠️ Needs Review

Click to expand output

[License Check Output]
Extracting Bazel installation...
Starting local Bazel server (8.6.0) and connecting to it...
INFO: Invocation ID: a984208f-26cd-4c39-90fd-d2f4edbc192e
Computing main repo mapping: 
Computing main repo mapping: 
Computing main repo mapping: 
Computing main repo mapping: 
Computing main repo mapping: 
Loading: 
Loading: 3 packages loaded
Loading: 3 packages loaded
    currently loading: 
Loading: 3 packages loaded
    currently loading: 
Loading: 3 packages loaded
    currently loading: 
Loading: 3 packages loaded
    currently loading: 
Loading: 3 packages loaded
    currently loading: 
Analyzing: target //:license-check (4 packages loaded, 0 targets configured)
Analyzing: target //:license-check (4 packages loaded, 0 targets configured)

Analyzing: target //:license-check (46 packages loaded, 10 targets configured)

Analyzing: target //:license-check (97 packages loaded, 32 targets configured)

Analyzing: target //:license-check (139 packages loaded, 2273 targets configured)

Analyzing: target //:license-check (139 packages loaded, 2712 targets configured)

Analyzing: target //:license-check (139 packages loaded, 2712 targets configured)

Analyzing: target //:license-check (139 packages loaded, 2712 targets configured)

Analyzing: target //:license-check (149 packages loaded, 5498 targets configured)

Analyzing: target //:license-check (152 packages loaded, 8071 targets configured)

Analyzing: target //:license-check (161 packages loaded, 8133 targets configured)

Analyzing: target //:license-check (161 packages loaded, 8133 targets configured)

Analyzing: target //:license-check (161 packages loaded, 8133 targets configured)

Analyzing: target //:license-check (162 packages loaded, 8134 targets configured)

Analyzing: target //:license-check (165 packages loaded, 10145 targets configured)

INFO: Analyzed target //:license-check (166 packages loaded, 10271 targets configured).
[13 / 17] JavaToolchainCompileClasses external/rules_java+/toolchains/platformclasspath_classes; 0s disk-cache, processwrapper-sandbox
INFO: From Generating Dash formatted dependency file ...:
INFO: Successfully converted 66 packages from Cargo.lock to bazel-out/k8-fastbuild/bin/formatted.txt
[15 / 17] JavaToolchainCompileBootClasspath external/rules_java+/toolchains/platformclasspath.jar; 0s disk-cache, processwrapper-sandbox
INFO: Found 1 target...
Target //:license.check.license_check up-to-date:
  bazel-bin/license.check.license_check
  bazel-bin/license.check.license_check.jar
INFO: Elapsed time: 33.936s, Critical Path: 2.64s
INFO: 17 processes: 12 internal, 4 processwrapper-sandbox, 1 worker.
INFO: Build completed successfully, 17 total actions
INFO: Running command line: bazel-bin/license.check.license_check ./formatted.txt <args omitted>
usage: org.eclipse.dash.licenses.cli.Main [-batch <int>] [-cd <url>]
       [-confidence <int>] [-ef <url>] [-excludeSources <sources>] [-help] [-lic
       <url>] [-project <shortname>] [-repo <url>] [-review] [-summary <file>]
       [-timeout <seconds>] [-token <token>]

[github-actions]

The created documentation from the pull request is available at: docu-html