Provisioning: Update emsdk to 3.0.0

emsdk 3.0.0 is the minimum/recommended version for
Qt 6.3.

The python/node/jre versions appear to be unchanged.
Remove the unused versionTag variable.

Change-Id: Ic7b72691295040f899a22c54066b0aea3995cd7a
Reviewed-by: Lorn Potter <lorn.potter@gmail.com>

coin/provisioning/common/unix/emsdk.sh

@@ -35,7 +35,7 @@
 # shellcheck source=./SetEnvVar.sh
 source "${BASH_SOURCE%/*}/SetEnvVar.sh"
 
-version="2.0.14"
+version="3.0.0"
 versionNode="v14.15.5"
 
 mkdir -p /opt

coin/provisioning/common/windows/emsdk.ps1

@@ -35,8 +35,7 @@
 
 # This script will install emscripten needed by WebAssembly
 
-$version = "2.0.14"
-$versionTag="fc5562126762ab26c4757147a3b4c24e85a7289e"
+$version = "3.0.0"
 $versionNode = "14.15.5"
 $versionWinPython = "3.9.2-1"
 $versionJre = "8.152"