build: fix build of BoringSSL FIPS when $GOROOT is set. (#5353)
build: fix build of BoringSSL FIPS when $GOROOT is set. (#5353)

The Go binary downloaded by the boringssl_fips.sh script is used when
generating BoringSSL FIPS data, but previously, if $GOROOT was set in
the environment, it would override location of the Go library, leading
to a mismatch between the two.

Signed-off-by: Piotr Sikora <ba6f3a1a6d7e1ecae91b31e93969cc392fbd0fdd@google.com>
jrajahalme/envoy,envoyproxy/envoy,envoyproxy/envoy-wasm,lizan/envoy,eklitzke/envoy,istio/envoy,jrajahalme/envoy,jrajahalme/envoy,envoyproxy/envoy-wasm,dnoe/envoy,envoyproxy/envoy,envoyproxy/envoy,lyft/envoy,envoyproxy/envoy,lizan/envoy,eklitzke/envoy,envoyproxy/envoy,envoyproxy/envoy-wasm,dnoe/envoy,dnoe/envoy,envoyproxy/envoy,istio/envoy,istio/envoy,jrajahalme/envoy,lyft/envoy,eklitzke/envoy,envoyproxy/envoy-wasm,lyft/envoy,istio/envoy,eklitzke/envoy,jrajahalme/envoy,envoyproxy/envoy,envoyproxy/envoy,lizan/envoy,envoyproxy/envoy-wasm,envoyproxy/envoy,dnoe/envoy,lizan/envoy,jrajahalme/envoy,eklitzke/envoy,istio/envoy,lizan/envoy,envoyproxy/envoy-wasm,istio/envoy,lyft/envoy,eklitzke/envoy,envoyproxy/envoy,istio/envoy,envoyproxy/envoy,envoyproxy/envoy-wasm,lizan/envoy,lyft/envoy,dnoe/envoy,envoyproxy/envoy,lyft/envoy