How to solve this?

==> Verifying source file signatures with gpg...
    pyVHDLModel git repo ... FAILED (unknown public key B5690EEEBB952194)
==> ERROR: One or more PGP signatures could not be verified!

With a small tweak in the wheel's name, version 0.31.1 can be built.

 pkgname=python-pyvhdlmodel
 pkgdesc='An abstract VHDL language model'
-pkgver=0.28.0
+pkgver=0.31.1
 pkgrel=1
 arch=('any')
 url='https://github.com/VHDL/pyVHDLModel'
@@ -27,7 +27,7 @@ source=(
   "$_pyname-$pkgver.tar.gz::https://github.com/VHDL/pyVHDLModel/archive/refs/tags/v$pkgver.tar.gz"
 )
 sha256sums=(
-  '261846640e113a6dee241e5888a74951e0c6c074c1aafd7132aa676db17dc195'
+  '7707a67f1278e8e696419c21a41e37c38ba5c97a809c49189cee14c56847fe61'
 )

 build() {
@@ -38,11 +38,11 @@ build() {
 check() {
   cd "$_pyname-$pkgver"
   python -m venv --system-site-packages testenv
-  testenv/bin/python -m installer dist/"$_pyname-$pkgver"*.whl
+  testenv/bin/python -m installer dist/"pyvhdlmodel-$pkgver"*.whl
   testenv/bin/python -m pytest -v tests/unit
 }

 package() {
   cd "$_pyname-$pkgver"
-  python -m installer --destdir="$pkgdir" dist/"$_pyname-$pkgver"*.whl
+  python -m installer --destdir="$pkgdir" dist/"pyvhdlmodel-$pkgver"*.whl
 }