<!--- This environment context section helps us quickly review your PR. 
      Please take a minute to fill-out this information. -->
## Environment

**Liquibase Version**: 4.4.0

**Liquibase Integration & Version**: Maven

**Liquibase Extension(s) & Version**: None

**Database Vendor & Version**: All

**Operating System Type & Version**: Any


## Description

I am using XML changelog with <includeAll> for which path is mandatory in a zip file

```
<includeAll path="" relativeToChangelogFile="true" filter="my.XMLFilter"/>
```

I want to include all files in the directory of the changelog.
1. `<includeAll path="">` => Not working, is resolved to root of the zip archive
2. `<includeAll path=".">` => Not working, path is not normalized and ZipFileSystem does not resolve `myfolder/./` as `myfolder/`

## Steps To Reproduce

PR with unit Test to come...

## Actual Behavior
First case run into stack overflow
Second case does not find any file


## Expected/Desired Behavior
Expected behavior is to have the same behavior as regular file system


## Additional Context
Resolution can be to modify liquibase.resource.FileSystemResourceAccessor lines 237 - 239:

From 
```
                    if (path != null) {
                        basePath = basePath.resolve(path);
                    }
```
To
```
                    if (StringUtil.isNotEmpty(path)) {
                        basePath = basePath.resolve(path).normalize();
                    }
```





}
    public ContextExpression getIncludeContexts() {
        return includeContexts;
    }
    public void setIncludeLabels(LabelExpression labels) {
        this.includeLabels = labels;
    }
    public LabelExpression getIncludeLabels() {
        return includeLabels;
    }
    public void setIncludeIgnore(boolean ignore) {
        this.includeIgnore = ignore;
    }
    public boolean isIncludeIgnore() {
        return this.includeIgnore;
    }
    public void setIncludeContexts(ContextExpression includeContexts) {
        this.includeContexts = includeContexts;
    }
    @Override
    public String toString() {
        return getFilePath();
    }
    @Override
    public int compareTo(DatabaseChangeLog o) {
        return getFilePath().compareTo(o.getFilePath());
    }
    public ChangeSet getChangeSet(String path, String author, String id) {
        for (ChangeSet changeSet : changeSets) {
            final String normalizedPath = normalizePath(changeSet.getFilePath());