Bump MongoDB.Driver from 2.7.3 to 2.19.0 in /4_dataloader

[dependabot]

Bumps MongoDB.Driver from 2.7.3 to 2.19.0.

Release notes

Sourced from MongoDB.Driver's releases.

NET Driver Version 2.19.0 Release Notes

.NET Driver Version 2.19.0 Release Notes

This is the general availability release for the 2.19.0 version of the driver.

The main new features in 2.19.0 include:

• Atlas Search builders
• Default LinqProvider changed to LINQ3
• ObjectSerializer allowed types configuration
• Bucket and BucketAuto stages support in LINQ3
• Support Azure VM-assigned Managed Identity for Automatic KMS Credentials
• Native support for AWS IAM Roles

This version addresses CVE-2022-48282.

ObjectSerializer allowed types configuration

The ObjectSerializer has been changed to only allow deserialization of types that are considered safe. What types are considered safe is determined by a new configurable AllowedTypes function (of type Func<Type, bool>). The default AllowedTypes function is ObjectSerializer.DefaultAllowedTypes which returns true for a number of well-known framework types that we have deemed safe. A typical example might be to allow all the default allowed types as well as your own types. This could be accomplished as follows:

var objectSerializer = new ObjectSerializer(type => ObjectSerializer.DefaultAllowedTypes(type) || type.FullName.StartsWith("MyNamespace"));
BsonSerializer.RegisterSerializer(objectSerializer);

More information about the ObjectSerializer is available in our FAQ.

Default LinqProvider changed to LINQ3

Default LinqProvider has been changed to LINQ3. LinqProvider can be changed back to LINQ2 in the following way:

var connectionString = "mongodb://localhost";
var clientSettings = MongoClientSettings.FromConnectionString(connectionString);
clientSettings.LinqProvider = LinqProvider.V2;
var client = new MongoClient(clientSettings);

If you encounter a bug in LINQ3 provider, please report it in CSHARP JIRA project.

An online version of these release notes is available here.

The full list of issues resolved in this release is available at CSHARP JIRA project.

Documentation on the .NET driver can be found here.

.NET Driver Version 2.18.0 Release Notes

... (truncated)

Commits

• 3db6a36 Release notes for 2.19.0. (#1013)
• 790f123 CSHARP-4475: Add an AllowedTypes filter to ObjectSerializer.
• 8993daa CSHARP-4453: Support Bucket and BucketAuto stages in LINQ3.
• ec46c34 CSHARP-4490: Fix tests related to asserting wildcardProjection output. (#1011)
• 9ee046b CSHARP-4182: Support for Range Indexes. (#988)
• 9189a58 CSHARP-4440: Incorporate MongoDB.Labs.Search library (#989)
• 0bb42fa CSHARP-4255: Fix bug and some tests. (#993)
• c0c521e CSHARP-4449: Implement Find projections in LINQ3.
• 396830c CSHARP-4468: LINQ V3 SelectMany + GroupBy results with redundant $push within...
• 70ed174 CSHARP-4463: Add aws auth connectivity examples. (#1004)
• Additional commits viewable in compare view

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