build(deps): bump dart-lang/setup-dart from 1.6.5 to 1.7.0 in the github-actions group #1085

Job	Run time
analyze_and_format; Dart dev; PKGS: _test, _test_package, discoveryapis_commons, discoveryapis_ge...	4m 9s
mono_repo self validate	22s
analyze_and_format; Dart 3.5.0; PKGS: _test, _test_package, discoveryapis_commons, discoveryapis_...	3m 22s
unittest; Dart 3.5.0; PKG: discoveryapis_commons; `dart test`	33s
unittest; Dart 3.5.0; PKG: discoveryapis_generator; `dart test`	33s
unittest; Dart 3.5.0; PKG: _test_package; `dart test`	31s
unittest; Dart 3.5.0; PKG: generated/googleapis_beta; `dart test`	42s
unittest; Dart 3.5.0; PKG: googleapis_auth; `dart test -p chrome`	2m 16s
unittest; Dart 3.5.0; PKG: generated/googleapis; `dart test`	6m 59s
unittest; Dart 3.5.0; PKG: googleapis_auth; `dart test -p vm`	31s
unittest; Dart dev; PKG: _test_package; `dart test`	31s
unittest; Dart dev; PKG: discoveryapis_commons; `dart test`	26s
unittest; Dart dev; PKG: discoveryapis_generator; `dart test`	28s
unittest; Dart dev; PKG: generated/googleapis; `dart test`	7m 1s
unittest; Dart dev; PKG: generated/googleapis_beta; `dart test`	34s
unittest; Dart dev; PKG: googleapis_auth; `dart test -p chrome`	1m 32s
unittest; Dart dev; PKG: googleapis_auth; `dart test -p vm`	28s
	30m 58s

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