Update the version of the simple-game-server to 0.5.

[roberthbailey]

What type of PR is this?

Uncomment only one /kind <> line, press enter to put that in a new line, and remove leading whitespace from that line:

/kind breaking
/kind bug

/kind cleanup

/kind documentation
/kind feature
/kind hotfix

What this PR does / Why we need it: Bumps the version of the image in the various places it exists in the repo.

Which issue(s) this PR fixes:
n/a

Special notes for your reviewer:

• I've pushed the new version to gcr.io already
• This is a follow-up to Add a flag to the simple game server so that it can have a delay before marking itself ready #2340 which updated the version of the simple-game-server.

[agones-bot]

Build Succeeded 👏

Build Id: ada3f1c8-7cf4-418d-8f09-e9543a23eee7

The following development artifacts have been built, and will exist for the next 30 days:

• image: gcr.io/agones-images/agones-controller:1.19.0-97f98d8
• image: gcr.io/agones-images/agones-ping:1.19.0-97f98d8
• Linux C++ SDK (build): agonessdk-1.19.0-97f98d8-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.19.0-97f98d8.zip

A preview of the website (the last 30 builds are retained):

• https://97f98d8-dot-preview-dot-agones-images.appspot.com/

To install this version:

• git fetch https://github.com/googleforgames/agones.git pull/2374/head:pr_2374 && git checkout pr_2374
• helm install ./install/helm/agones --namespace agones-system --name agones --set agones.image.tag=1.19.0-97f98d8

[agones-bot]

Build Succeeded 👏

Build Id: 531e5c98-09ae-4c1a-a705-f1c6c7820c56

The following development artifacts have been built, and will exist for the next 30 days:

• image: gcr.io/agones-images/agones-controller:1.19.0-dd99a9f
• image: gcr.io/agones-images/agones-ping:1.19.0-dd99a9f
• Linux C++ SDK (build): agonessdk-1.19.0-dd99a9f-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.19.0-dd99a9f.zip

A preview of the website (the last 30 builds are retained):

• https://dd99a9f-dot-preview-dot-agones-images.appspot.com/

To install this version:

• git fetch https://github.com/googleforgames/agones.git pull/2374/head:pr_2374 && git checkout pr_2374
• helm install ./install/helm/agones --namespace agones-system --name agones --set agones.image.tag=1.19.0-dd99a9f

[markmandel]

LGTM!

[google-oss-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: markmandel, roberthbailey

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