When trying to generate release notes we're seeing the following error:

```
Execution failed for task ':generateReleaseNotes'.
> Failed to find git tags prior to [v8.1.1-SNAPSHOT]
```

I believe the root cause is our handling of version qualifiers [here](https://github.com/elastic/elasticsearch/blob/bafdcbd2f179c54e3a1479ef53da7bc959f57cd5/build-tools-internal/src/main/java/org/elasticsearch/gradle/internal/release/GenerateReleaseNotesTask.java#L182). Since the current version is _always_ a snapshot we seem to not correctly identified older release versions.
build-tools-internal/src/main/java/org/elasticsearch/gradle/internal/release/GenerateReleaseNotesTask.java
/*
 * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
 * or more contributor license agreements. Licensed under the Elastic License
 * 2.0 and the Server Side Public License, v 1; you may not use this file except
 * in compliance with, at your election, the Elastic License 2.0 or the Server
 * Side Public License, v 1.
 */
package org.elasticsearch.gradle.internal.release;
import com.google.common.annotations.VisibleForTesting;
import org.elasticsearch.gradle.VersionProperties;
import org.gradle.api.DefaultTask;
import org.gradle.api.GradleException;
import org.gradle.api.file.ConfigurableFileCollection;
import org.gradle.api.file.FileCollection;
import org.gradle.api.file.RegularFile;
import org.gradle.api.file.RegularFileProperty;
import org.gradle.api.logging.Logger;
import org.gradle.api.logging.Logging;
import org.gradle.api.model.ObjectFactory;
import org.gradle.api.tasks.InputFile;