Bump pygments from 2.6.1 to 2.7.1

Bumps [pygments](https://github.com/pygments/pygments) from 2.6.1 to 2.7.1.
- [Release notes](https://github.com/pygments/pygments/releases)
- [Changelog](https://github.com/pygments/pygments/blob/master/CHANGES)
- [Commits](https://github.com/pygments/pygments/compare/2.6.1...2.7.1)

Signed-off-by: dependabot[bot] <support@github.com>

poetry.lock

@@ -445,7 +445,7 @@ description = "Pygments is a syntax highlighting package written in Python."
 name = "pygments"
 optional = false
 python-versions = ">=3.5"
-version = "2.6.1"
+version = "2.7.1"
 
 [[package]]
 category = "main"
@@ -620,6 +620,7 @@ jupyter = ["ipywidgets"]
 
 [metadata]
 content-hash = "64c8b886ebf3d4fec7647f65af7ebf6b20e031fbec205d96af3c937ff686c415"
+lock-version = "1.0"
 python-versions = "^3.6"
 
 [metadata.files]
@@ -786,8 +787,8 @@ ptyprocess = [
     {file = "ptyprocess-0.6.0.tar.gz", hash = "sha256:923f299cc5ad920c68f2bc0bc98b75b9f838b93b599941a6b63ddbc2476394c0"},
 ]
 pygments = [
-    {file = "Pygments-2.6.1-py3-none-any.whl", hash = "sha256:ff7a40b4860b727ab48fad6360eb351cc1b33cbf9b15a0f689ca5353e9463324"},
-    {file = "Pygments-2.6.1.tar.gz", hash = "sha256:647344a061c249a3b74e230c739f434d7ea4d8b1d5f3721bc0f3558049b38f44"},
+    {file = "Pygments-2.7.1-py3-none-any.whl", hash = "sha256:307543fe65c0947b126e83dd5a61bd8acbd84abec11f43caebaf5534cbc17998"},
+    {file = "Pygments-2.7.1.tar.gz", hash = "sha256:926c3f319eda178d1bd90851e4317e6d8cdb5e292a3386aac9bd75eca29cf9c7"},
 ]
 pyparsing = [
     {file = "pyparsing-2.4.7-py2.py3-none-any.whl", hash = "sha256:ef9d7589ef3c200abe66653d3f1ab1033c3c419ae9b9bdb1240a85b024efc88b"},