fix(bazel): Lowecase the name as required by the proposal

See [1].

[1]: package-url/purl-spec#317

Signed-off-by: Sebastian Schuberth <sebastian@doubleopen.org>

plugins/package-managers/bazel/src/main/kotlin/Bazel.kt

@@ -58,6 +58,7 @@ import org.ossreviewtoolkit.model.config.AnalyzerConfiguration
 import org.ossreviewtoolkit.model.config.RepositoryConfiguration
 import org.ossreviewtoolkit.model.createAndLogIssue
 import org.ossreviewtoolkit.model.orEmpty
+import org.ossreviewtoolkit.model.utils.toPurl
 import org.ossreviewtoolkit.utils.common.CommandLineTool
 import org.ossreviewtoolkit.utils.common.ProcessCapture
 import org.ossreviewtoolkit.utils.common.alsoIfNull
@@ -306,6 +307,7 @@ class Bazel(
         packageIdsWithPathOverride.mapTo(result) {
             Package(
                 id = it,
+                purl = it.toPurl { it.lowercase() },
                 declaredLicenses = emptySet(),
                 description = "",
                 homepageUrl = "",