[FABG-780] Update regex, dependencies.sh

This change request fixes an issue when running `make populate` in
the fabric-sdk-go directory using Windows 10 Git Bash (MINGW64). An
error occurs reading, "test/scripts/dependencies.sh: line 104:
unexpected argument `(' to conditional binary operator make:
*** [depend] Error 2"
So, I used the solution from [FABG-774] Updated regex to string,
populate-vendor.sh, but adjusted for dependencies.sh. This patch
runs correctly on Windows 10 using Git Bash and should run similarly
to the [FABG-774] patch on other systems.

Change-Id: I31c689b78cdea8492de9ce2062bffa8e095fb8be
Signed-off-by: jvsclp <jvs@clpinc.com>

Author: jvsclp

test/scripts/dependencies.sh

@@ -101,7 +101,8 @@ function installGoPkg {
 
 function isScriptCurrent {
     declare filesModified=$(git diff --name-only --diff-filter=ACMRTUXBD HEAD | tr '\n' ' ' | xargs)
-    if [[ "${filesModified}" =~ ( |^)(test/scripts/dependencies.sh)( |$) ]]; then
+    declare matcher='( |^)(test/scripts/dependencies.sh)( |$)'
+    if [[ "${filesModified}" =~ ${matcher} ]]; then
         echo "Dependencies script modified - will need to install dependencies"
         return 1
     fi