GHA: Dependency updates July 2025

GHA: Dependency updates July 2025

chore(deps): update dependency aws/aws-lc to v1.55.0
chore(deps): update lukka/get-cmake action to v4.0.3
chore(deps): update vcpkg digest to f33cc49
chore(deps): update dependency mbed-tls/mbedtls to v3.6.4

Change-Id: I6122225cc12c4f299a2a48db24bc7379ac6c5921
Signed-off-by: Frank Lichtenheld <frank@lichtenheld.com>
Acked-by: Yuriy Darnobyt <yura.uddr@gmail.com>
Message-Id: <20250722102718.85403-1-frank@lichtenheld.com>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg32242.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>