Fix env var name #840

Job	Run time
Package builder app	5s
Unit Tests	5s
Clean up previous branch jobs	6s
compilers (clang-9)	51s
compilers (clang-10)	34s
cross_compile (linux-armv6)	9m 56s
compilers (clang-11)	34s
cross_compile (linux-armv7)	10m 28s
Sanity Test (ubuntu-22.04)	1m 50s
cross_compile (linux-armv8)	9m 42s
compilers (gcc-7)	33s
Sanity Test (macos-11)	2m 49s
compilers (gcc-8)	28s
Sanity Test (macos-12)	3m 25s
compilers (gcc-9)	28s
Sanity Test (windows-2022)	3m 4s
compilers (gcc-10)	29s
downstream (aws-c-mqtt)	10m 37s
compilers (gcc-11)	1m 16s
release_notes (aws-crt-python)	35s
downstream (aws-c-http)	4m 51s
release_notes (aws-iot-device-sdk-python-v2)	5s
downstream (aws-crt-python)	4m 27s
aws-c-cal (manylinux1-x86)	2m 22s
downstream (aws-crt-cpp)	5m 58s
aws-c-cal (manylinux1-x64)	2m 9s
swift (swift-5-ubuntu-x64)	48s
downstream (aws-crt-java)	9m 4s
aws-c-cal (manylinux2014-x86)	2m 25s
swift (swift-5-centos-x64)	45s
downstream (aws-crt-nodejs)	4m 51s
aws-c-cal (manylinux2014-x64)	2m 27s
swift (swift-5-al2-x64)	41s
aws-c-cal (manylinux2014-aarch64)	22m 33s
aws-c-cal (musllinux-1-1-aarch64)	24m 59s
aws-c-cal (musllinux-1-1-x64)	2m 31s
std-compat (gcc-8, c++11)	6m 47s
std-compat (gcc-8, c++14)	5m 41s
std-compat (gcc-8, c++17)	7m 43s
std-compat (gcc-8, c++2a)	7m 34s
std-compat (clang-9, c++11)	5m 4s
std-compat (clang-9, c++14)	6m 2s
std-compat (clang-9, c++17)	6m 14s
std-compat (clang-9, c++2a)	5m 55s
All Sanity Tests passed	1s
	3h 19m 52s

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