[BUG] Fixing Bug in Version Handling

[drivanov]

I've noticed that the tests with the withPackage test decorators

@withPackage("torch>=1.12.0")
def test_some_test(...):
    . . .

are not being executed,

SKIPPED [2] test/nn/conv/test_heat_conv.py:10: Package torch>=1.12.0 not found
SKIPPED [2] test/nn/conv/test_hetero_conv.py:181: Package torch>=2.1.0 not found
SKIPPED [1] test/nn/conv/test_hgt_conv.py:12: Package torch>=1.12.0 not found
SKIPPED [1] test/nn/conv/test_hgt_conv.py:63: Package torch>=1.12.0 not found
SKIPPED [1] test/nn/conv/test_hgt_conv.py:114: Package torch>=1.12.0 not found

even though I have torch=2.4.0 installed on my machine. To be precise, I am using Torch version 2.4.0a0+f70bd71a48.nv24.06 which has an unexpected version ID format for the for pytorch_geometric .

The proposed PR uses standard Python version handling, which covers the dev case previously treated separately.

NOTES:

• I found and fixed a similar issue in pytorch_frame, see PR#410.
• When testing the fix for the current PR, I noticed that 113 (=600-483) more tests were run from the test directory

  Befor:========== 5926 passed, 600 skipped, 503 warnings in 535.56s (0:08:55)
  After:========== 13 failed, 6030 passed, 483 skipped, 521 warnings  in 596.27s  (0:09:56)

  and 13 of them failed. Similar failures may occur in your CI environment. Please consider this during the PR review.