Maven attester not resolving versions or scope if not explicitly set

[ChaosInTheCRD]

Creating issue in relation to in-toto/witness#282 over here as it is relevant to this repository.

from @garethahealy:

If the pom.xml doesnt explicitly set the scope or version and uses dependencyManagement, witness does not output it in the attestation. i.e.:

<dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>${quarkus.platform.group-id}</groupId>
                <artifactId>${quarkus.platform.artifact-id}</artifactId>
                <version>${quarkus.platform.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <dependency>
                <groupId>${quarkus.platform.group-id}</groupId>
                <artifactId>quarkus-camel-bom</artifactId>
                <version>${quarkus.platform.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
</dependencyManagement>

<dependencies>
        <!-- Core -->
        <dependency>
            <groupId>io.quarkus</groupId>
            <artifactId>quarkus-arc</artifactId>
        </dependency>
        <dependency>
            <groupId>org.apache.camel.quarkus</groupId>
            <artifactId>camel-quarkus-core</artifactId>
        </dependency>
        <dependency>
            <groupId>com.google.code.findbugs</groupId>
            <artifactId>jsr305</artifactId>
            <version>3.0.2</version>
        </dependency>
        <dependency>
            <groupId>io.quarkus</groupId>
            <artifactId>quarkus-container-image-docker</artifactId>
        </dependency>
        <dependency>
            <groupId>io.rest-assured</groupId>
            <artifactId>rest-assured</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.apache.httpcomponents.client5</groupId>
            <artifactId>httpclient5</artifactId>
            <version>5.2.1</version>
            <scope>test</scope>
        </dependency>
    </dependencies>

produces:

{
        "type": "https://witness.dev/attestations/maven/v0.1",
        "attestation": {
          "groupid": "org.acme",
          "artifactid": "cats-and-dogs",
          "version": "1.0.0-SNAPSHOT",
          "projectname": "",
          "dependencies": [
            {
              "groupid": "io.quarkus",
              "artifactid": "quarkus-arc",
              "version": "",
              "scope": ""
            },
            {
              "groupid": "org.apache.camel.quarkus",
              "artifactid": "camel-quarkus-core",
              "version": "",
              "scope": ""
            },
            {
              "groupid": "com.google.code.findbugs",
              "artifactid": "jsr305",
              "version": "3.0.2",
              "scope": ""
            },
            {
              "groupid": "io.quarkus",
              "artifactid": "quarkus-container-image-docker",
              "version": "",
              "scope": ""
            },
            {
              "groupid": "io.rest-assured",
              "artifactid": "rest-assured",
              "version": "",
              "scope": "test"
            },
            {
              "groupid": "org.apache.httpcomponents.client5",
              "artifactid": "httpclient5",
              "version": "5.2.1",
              "scope": "test"
            }
          ]
        },
        "starttime": "2023-09-06T10:48:14.932748+01:00",
        "endtime": "2023-09-06T10:48:14.934408+01:00"
      }

I'd of expected the version/scope to be included.