CI: Resolve flake8 issues in utils directory (OSGeo#4303)

* resolved flake8 in utils

* updated .flake8

---------

Co-authored-by: Arohan Ajit <aajit@chirpn.com>

.flake8

@@ -21,7 +21,6 @@ per-file-ignores =
     # E741 ambiguous variable name 'l'
     __init__.py: F401, F403
     lib/init/grass.py: E722, F821, F841
-    utils/gitlog2changelog.py: E722, E712
     man/build_check_rest.py: F403, F405
     man/build_full_index_rest.py: F403, F405
     man/parser_standard_options.py: F403, F405

utils/gitlog2changelog.py

@@ -66,8 +66,8 @@
             author = authorList[1]
             author = author[0 : len(author) - 1]
             authorFound = True
-        except:
-            print("Could not parse authorList = '%s'" % (line))
+        except Exception as e:
+            print(f"Could not parse authorList = '{line}'. Error: {e!s}")
 
     # Match the date line
     elif line.startswith("Date:"):
@@ -76,8 +76,8 @@
             date = dateList[1]
             date = date[0 : len(date) - 1]
             dateFound = True
-        except:
-            print("Could not parse dateList = '%s'" % (line))
+        except Exception as e:
+            print(f"Could not parse dateList = '{line}'. Error: {e!s}")
     # The Fossil-IDs are ignored:
     elif line.startswith("    Fossil-ID:") or line.startswith("    [[SVN:"):
         continue