refactor(build): Bump version to v1.3.8 #999

Job	Run time
Debug Build & Unit Tests (gcc)	2m 12s
Debug Build & Unit Tests without Subscriptions (gcc)	1m 2s
Debug Build & Unit Tests with Diagnostics (gcc)	2m 37s
Debug Build & Unit Tests with multithreading (gcc)	1m 53s
Debug Build & Unit Tests with Alarms&Conditions (gcc)	3m 38s
Debug Build & Unit Tests (clang)	3m 22s
Debug Build & Unit Tests (tcc)	1m 51s
Encryption (MbedTLS) Build & Unit Tests (gcc)	1m 47s
PubSub Encryption (MbedTLS) Build & Unit Tests (gcc)	2m 2s
Encryption (OpenSSL) Build & Unit Tests (gcc)	1m 37s
Encryption (LibreSSL) Build & Unit Tests (gcc)	5m 16s
TPM Tool Build	3m 42s
Release Build	1m 21s
Amalgamation Build	55s
Amalgamation Build with Multithreading	1m 4s
Valgrind Unit Tests with MbedTLS (gcc)	10m 47s
Valgrind Unit Tests with OpenSSL (gcc)	6m 57s
Valgrind Examples with MbedTLS (gcc)	12m 11s
Valgrind Examples with OpenSSL (gcc)	12m 7s
Clang Static Analyzer	3m 28s
	1h 19m 49s

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