[OOB] Upgrades 'dotnet-framework' to '51.1.6'

[SvcGitHubPATagentoperatorimages]

Automated OOB update requested by SvcGitHubPATagentoperatorimages.

Agent: dotnet-framework
Version: 51.1.4 -> 51.1.6

[github-actions]

Images built:

dotnet-core: ghcr.io/contrast-security-oss/agent-operator-images/agent-dotnet-core@sha256:f9933e8de24842fe7a5a7b3b07316c4194b910dc374293d81786107c5374a221
dotnet-framework: ghcr.io/contrast-security-oss/agent-operator-images/agent-dotnet-framework@sha256:63a65336ba5af2007cf52b57a5d592f27943ab68794dbc948382b4401e5a9915
java: ghcr.io/contrast-security-oss/agent-operator-images/agent-java@sha256:c69d1c83b3581f9db69d86cb22092652b148809273a40dcd2adc1f70649e1e23
nodejs: ghcr.io/contrast-security-oss/agent-operator-images/agent-nodejs@sha256:f5a495683cff5207af2bf22c7f804cfaa7ba9fefd9ce6f25bc972aca18f041ca
php: ghcr.io/contrast-security-oss/agent-operator-images/agent-php@sha256:973609049d4adb416e74c031bdb76b2982eea2023587e8bdc232223df0bc3bcf
python: ghcr.io/contrast-security-oss/agent-operator-images/agent-python@sha256:260d0e96127915300c51cc5e07a651f6438ee38cb34e752c83c8de6e97797b61