Prepare v1.9.7

Bump re2 to 2021-02-02

Author: nifoc

c_src/build_deps.sh

@@ -29,7 +29,7 @@ case "$1" in
         fi
         test -f re2/$LIBRE2 && exit 0
 
-        RE2_REV=${RE2_REV:-2020-11-01}
+        RE2_REV=${RE2_REV:-2021-02-02}
         case $(git config --get remote.origin.url) in
             git@github.com*|https://github.com*|git://github.com*)
                 RE2_DEFAULT_URL=https://github.com/google/re2

src/re2.app.src

@@ -1,6 +1,6 @@
 {application, re2,
  [ {description, "Erlang NIF bindings for RE2 regex library"}
- , {vsn, "1.9.6"}
+ , {vsn, "1.9.7"}
  , {modules, [re2]}
  , {registered, []}
  , {applications, [ kernel