Bump actions/checkout from 2 to 3

Bumps [actions/checkout](https://github.com/actions/checkout) from 2 to 3.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/v2...v3)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/create-release.yaml

@@ -1,4 +1,4 @@
-name: Create release on tag push
+name: Create release on tag push
 
 on:
   push:
@@ -12,7 +12,7 @@ jobs:
 
     steps:
       - name: Checkout source code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Draft release
         uses: ncipollo/release-action@v1

CHANGELOG.md

@@ -1,3 +1,12 @@
+# devel
+
+## Fixed
+
+* Looking up a CMDR with public profile, but hidden activity (= no date of last 
+  activity) will no longer throw an exception.
+
+-----
+
 # 0.2 (2022-07-02)
 
 ## Added

edsm/models.py

@@ -49,6 +49,10 @@ class Commander(Positionable):
     json = logsApi.Position.getSystem(self.name, self.apiKey)
     self.profileUrl = json
     if 'dateLastActivity' in json:
+      date = json['dateLastActivity']
+      if date is None:
+        return None
+      else:
         return dateparser.parse(json['dateLastActivity'])
     else:
       return None