Add bundle exec to rake tasks

[mickeytgl]

Fixes #447

Also adds bundle install between the clean task and the rake task because clean removes the prism path and rake fails because of it.

Without bundle install:

bin/integration
rm -f herb run_herb_tests build/libherb.bundle  ext/herb/build/libherb.bundle
rm -rf src/analyze.o src/analyze_helpers.o src/analyzed_ruby.o src/array.o src/ast_node.o src/ast_nodes.o src/ast_pretty_print.o src/buffer.o src/errors.o src/extract.o src/herb.o src/html_util.o src/io.o src/json.o src/lexer.o src/lexer_peek_helpers.o src/location.o src/main.o src/memory.o src/parser.o src/parser_helpers.o src/position.o src/pretty_print.o src/prism_helpers.o src/range.o src/ruby_parser.o src/token.o src/token_matchers.o src/utf8.o src/util.o src/visitor.o test/c/main.o test/c/test_array.o test/c/test_buffer.o test/c/test_herb.o test/c/test_html_util.o test/c/test_io.o test/c/test_json.o test/c/test_lex.o test/c/test_token.o test/c/test_util.o  lib/herb/*.bundle tmp
rm -rf /Users/miguel/code/herb/vendor/bundle/ruby/3.4.0/bundler/gems/prism-266f83de6a2b
https://github.com/ruby/prism.git (at v1.4.0@266f83d) is not yet checked out. Run `bundle install` first.

[marcoroth]

Good one, thanks @mickeytgl! 🙏🏼