Makefile incorrectly assumes existence of ~/bin (#135)

### Description

install-ocb target assumed pre-existence of ~/bin
Added non-destructive mkdir before curl operation

### Checklist
- [NA] Created tests which fail without the change (if possible)
- [NA] Extended the README / documentation, if necessary

Author: obs-gh-scottsolmonson

Makefile

@@ -28,7 +28,8 @@ release:
 
 ## install-ocb: Installs correct version of ocb binary
 install-ocb:
-	curl --proto '=https' --tlsv1.2 -L -o "$(HOME)/bin/ocb" https://github.com/open-telemetry/opentelemetry-collector-releases/releases/download/cmd%2Fbuilder%2Fv0.114.0/ocb_0.114.0_darwin_arm64
+	@mkdir -p "$(HOME)/bin"
+	curl --proto '=https' --tlsv1.2 -L -o "$(HOME)/bin/ocb" https://github.com/open-telemetry/opentelemetry-collector-releases/releases/download/cmd%2Fbuilder%2Fv0.110.0/ocb_0.110.0_darwin_arm64
 	@chmod +x "$(HOME)/bin/ocb"
 
 ## build-ocb: Builds project using ocb