refactor(build): Update to recent CMake FindPython #1086

Job	Run time
Debug Build & Unit Tests (gcc)	2m 47s
Debug Build & Unit Tests (gcc, 32bit)	2m 55s
Debug Build & Unit Tests without Subscriptions (gcc)	1m 25s
Debug Build & Unit Tests with Diagnostics (gcc)	2m 42s
Debug Build & Unit Tests with multithreading (gcc)	1m 57s
Debug Build & Unit Tests with Alarms&Conditions (gcc)	3m 25s
Debug Build & Unit Tests (clang)	4m 6s
Debug Build & Unit Tests (tcc)	2m 18s
Encryption (MbedTLS) Build & Unit Tests (gcc)	2m 10s
PubSub Encryption (MbedTLS) Build & Unit Tests (gcc)	2m 53s
PubSub SKS Build & Unit Tests (gcc)	3m 13s
Encryption (OpenSSL) Build & Unit Tests (gcc)	2m 3s
Encryption (LibreSSL) Build & Unit Tests (gcc)	4m 45s
TPM Tool Build	2m 11s
Release Build	59s
Amalgamation Build	40s
Amalgamation Build with Multithreading	46s
Valgrind Build & Unit Tests with MbedTLS (gcc)	19m 34s
Valgrind Build & Unit Tests with OpenSSL (gcc)	15m 16s
Valgrind Examples with MbedTLS (gcc)	59m 25s
Valgrind Examples with OpenSSL (gcc)	59m 22s
Clang Static Analyzer	2m 56s
Build All Companion Specifications	8m 58s
	3h 26m 46s

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