chore: commit changelog after generating it (#455)

Author: SimenB

package.json

@@ -47,6 +47,7 @@
     "@commitlint/cli": "^8.2.0",
     "@commitlint/config-conventional": "^8.2.0",
     "@semantic-release/changelog": "^3.0.5",
+    "@semantic-release/git": "^7.0.17",
     "@types/eslint": "^6.1.3",
     "@types/jest": "^24.0.15",
     "@types/node": "^12.6.6",
@@ -133,6 +134,7 @@
       "@semantic-release/release-notes-generator",
       "@semantic-release/changelog",
       "@semantic-release/npm",
+      "@semantic-release/git",
       "@semantic-release/github"
     ]
   }

yarn.lock

@@ -1146,6 +1146,22 @@
   resolved "https://registry.yarnpkg.com/@semantic-release/error/-/error-2.2.0.tgz#ee9d5a09c9969eade1ec864776aeda5c5cddbbf0"
   integrity sha512-9Tj/qn+y2j+sjCI3Jd+qseGtHjOAeg7dU2/lVcqIQ9TV3QDaDXDYXcoOHU+7o2Hwh8L8ymL4gfuO7KxDs3q2zg==
 
+"@semantic-release/git@^7.0.17":
+  version "7.0.17"
+  resolved "https://registry.yarnpkg.com/@semantic-release/git/-/git-7.0.17.tgz#b58abf40a58d213fcfb2710c112dbc314b63c0f5"
+  integrity sha512-xtNXhdWW92VCG4EumZ/Ijj44Yezaau9pQ39KB4q3l17vyu55MwPzQjlhSfysPshwosmVkzp6LhvYIg9+xUL07A==
+  dependencies:
+    "@semantic-release/error" "^2.1.0"
+    aggregate-error "^3.0.0"
+    debug "^4.0.0"
+    dir-glob "^3.0.0"
+    execa "^3.2.0"
+    fs-extra "^8.0.0"
+    globby "^10.0.0"
+    lodash "^4.17.4"
+    micromatch "^4.0.0"
+    p-reduce "^2.0.0"
+
 "@semantic-release/github@^5.1.0":
   version "5.5.5"
   resolved "https://registry.yarnpkg.com/@semantic-release/github/-/github-5.5.5.tgz#4666367f16d8ad91fd1d3c71a7238498de14ec38"
@@ -5998,7 +6014,7 @@ micromatch@^3.1.10, micromatch@^3.1.4:
     snapdragon "^0.8.1"
     to-regex "^3.0.2"
 
-micromatch@^4.0.2:
+micromatch@^4.0.0, micromatch@^4.0.2:
   version "4.0.2"
   resolved "https://registry.yarnpkg.com/micromatch/-/micromatch-4.0.2.tgz#4fcb0999bf9fbc2fcbdd212f6d629b9a56c39259"
   integrity sha512-y7FpHSbMUMoyPbYUSzO6PaZ6FyRnQOpHuKwbo1G+Knck95XVU4QAiKdGEnj5wwoS7PlOgthX/09u5iFJ+aYf5Q==