Fix tests

tests/Composer/Test/Fixtures/functional/installed-versions.test

@@ -11,7 +11,7 @@ update
 !!PreUpdate:["composer/ca-bundle","composer/composer","composer/metadata-minifier","composer/pcre","composer/semver","composer/spdx-licenses","composer/xdebug-handler","justinrainbow/json-schema","psr/log","react/promise","seld/jsonlint","seld/phar-utils","symfony/console","symfony/debug","symfony/filesystem","symfony/finder","symfony/polyfill-ctype","symfony/polyfill-mbstring","symfony/process"]
 !!Versions:console:%[2-8]\.\d+\.\d+.0%;process:%[2-8]\.\d+\.\d+.0%;filesystem:%[2-8]\.\d+\.\d+.0%
 Loading composer repositories with package information
-Updating dependencies
+%((Info|Warning) from .*\n)?%Updating dependencies
 Lock file operations: 6 installs, 0 updates, 0 removals
   - Locking plugin/a (1.1.1)
   - Locking plugin/b (2.2.2)

tests/Composer/Test/Fixtures/functional/installed-versions2.test

@@ -17,7 +17,7 @@ update plugin/* symfony/console symfony/filesystem symfony/process
 !!PreUpdate:["composer/ca-bundle","composer/composer","composer/metadata-minifier","composer/pcre","composer/semver","composer/spdx-licenses","composer/xdebug-handler","justinrainbow/json-schema","psr/log","react/promise","seld/jsonlint","seld/phar-utils","symfony/console","symfony/debug","symfony/filesystem","symfony/finder","symfony/polyfill-ctype","symfony/polyfill-mbstring","symfony/process","plugin/a","plugin/b","root/pkg"]
 !!Versions:console:%[2-8]\.\d+\.\d+.0%;process:%[2-8]\.\d+\.\d+.0%;filesystem:%[2-8]\.\d+\.\d+.0%
 Loading composer repositories with package information
-Updating dependencies
+%((Info|Warning) from .*\n)?%Updating dependencies
 Lock file operations: 0 installs, 5 updates, 0 removals
   - Upgrading plugin/a (1.1.1 => 1.1.2)
   - Upgrading plugin/b (2.2.2 => 2.2.3)