Describe the bug
Installing the latest signtool beta (which doesn't have an associated release btw) signing nupkgs fails with

fail: Sign.Core.IDataFormatSigner[0]
The system cannot find the path specified.
System.ComponentModel.Win32Exception (3): The system cannot find the path specified.
at Sign.Core.Kernel32.ActivationContext..ctor(FileInfo manifestFile) in //src/Sign.Core/Native/Kernel32.cs:line 83
at Sign.Core.AzureSignToolSigner.RunSignTool(AuthenticodeKeyVaultSigner signer, FileInfo file, SignOptions options) in //src/Sign.Core/DataFormatSigners/AzureSignToolSigner.cs:line 175

Repro steps

Signing workflow

Successfully ran at 7am with

Tool 'sign' (version '0.9.1-beta.25379.1') was successfully installed.

Failed at 6pm

Tool 'sign' (version '0.9.1-beta.26080.1') was successfully installed.

Nothing else changed

Expected behavior
Signing succeeds

Actual behavior
Signing files with an exception.