Bump protobuf from 3.5.1 to 3.18.3 in /contrib/deterministic-build

Bumps [protobuf](https://github.com/protocolbuffers/protobuf) from 3.5.1 to 3.18.3.
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/main/generate_changelog.py)
- [Commits](https://github.com/protocolbuffers/protobuf/compare/v3.5.1...v3.18.3)

---
updated-dependencies:
- dependency-name: protobuf
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

contrib/deterministic-build/requirements-hw.txt

@@ -10,7 +10,7 @@ keepkey==4.0.2
 libusb1==1.6.4
 mnemonic==0.18
 pbkdf2==1.3
-protobuf==3.5.1
+protobuf==3.18.3
 pyblake2==1.1.0
 requests==2.18.4
 six==1.11.0

contrib/deterministic-build/requirements.txt

@@ -5,7 +5,7 @@ ecdsa==0.13
 idna==2.6
 jsonrpclib-pelix==0.3.1
 pbkdf2==1.3
-protobuf==3.5.1
+protobuf==3.18.3
 pyaes==1.6.1
 PySocks==1.6.8
 qrcode==5.3