[OOB] Upgrades 'dotnet-framework' to '51.3.1'

[SvcGitHubPATagentoperatorimages]

Automated OOB update requested by SvcGitHubPATagentoperatorimages.

Agent: dotnet-framework
Version: 51.3.0 -> 51.3.1

[github-actions]

Images built:

dotnet-core: ghcr.io/contrast-security-oss/agent-operator-images/agent-dotnet-core@sha256:5621a2bce5b0cde4cc1d807f03dc2947ee790a00dab782c97d4ac814c13ee74b
dotnet-framework: ghcr.io/contrast-security-oss/agent-operator-images/agent-dotnet-framework@sha256:f804d2fb0050200eb98cca7f224d4700666b88c0f36f50036d7766b65a89e159
java: ghcr.io/contrast-security-oss/agent-operator-images/agent-java@sha256:1890608fafda8173daccfacdd23de127f540743753336139475df8cea31f53a5
nodejs: ghcr.io/contrast-security-oss/agent-operator-images/agent-nodejs@sha256:0edfbaaf8f65cd69e10572a0f1c758578d315d31ac9a41b30d5ac00d7cfe43bc
php: ghcr.io/contrast-security-oss/agent-operator-images/agent-php@sha256:66c60def126bd985cabd5745a8c94f4e05495bfabc7c1b01394bfe33ab666812
python: ghcr.io/contrast-security-oss/agent-operator-images/agent-python@sha256:5589817ff3b128a692347d920e1355a3f1cbbf0b020eb2b96d9e3a1701a2a6f7
flex: ghcr.io/contrast-security-oss/agent-operator-images/agent-flex@sha256:d029b7422f483a4a529f80670c53d26f0647a5adb8a4ea5d23eea29cb7f09380