Skip tests for manylinux_aarch64 builds

[nsmith-]

As we see small floating point rounding discrepancies in lwtnn on this platform. Related to #35

In the wheel build on ubuntu-24.04-arm for we have a test failure:

[3](https://github.com/cms-nanoAOD/correctionlib/actions/runs/27582720385/job/81546393204#step:3:2624)
  =================================== FAILURES ===================================
  ______________________________ test_lwtnn_example ______________________________
  
      def test_lwtnn_example():
          cset = CorrectionSet.from_file(str(LWTNN_TEST_FIXTURE))
          corr = cset["electron_fastsim_sf"]
      
          gen_pt = 15.0
          gen_eta = 0.4
          gen_phi = 2.1
          gen_iso = 1e-3
          sf = corr.evaluate(
              gen_pt,
              gen_eta,
              gen_phi,
              gen_iso,
          )
  >       assert sf == 0.95186825355646787
  E       assert 0.9518682535564678 == 0.9518682535564679
  
  /project/tests/test_lwtnn.py:41: AssertionError

so it seems lwtnn is sensitive to platform-dependent float rounding.

[github-actions]

CVMFS benchmarks

Top 25 slowest-loading corrections, sorted by mean time:

Benchmark	Mean (ms)	Stddev (ms)	Rounds
test_load[JME/Run2-2017-UL-NanoAODv9/latest/jet_jerc.json.gz]	1005.297	3.888	5
test_load[JME/Run2-2017-UL-NanoAODv9/latest/fatJet_jerc.json.gz]	836.191	8.413	5
test_load[JME/Run3-24Prompt-Winter24-NanoAODv14/latest/jet_jerc.json.gz]	697.693	2.872	5
test_load[JME/Run3-24CDEReprocessingFGHIPrompt-Summer24-NanoAODv15/latest/fatJet_jerc.json.gz]	618.594	2.659	5
test_load[JME/Run3-24CDEReprocessingFGHIPrompt-Summer24-NanoAODv15/latest/jet_jerc.json.gz]	615.113	1.886	5
test_load[JME/Run3-25Prompt-Winter25-NanoAODv15/latest/fatJet_jerc.json.gz]	418.594	1.600	5
test_load[JME/Run3-25Prompt-Winter25-NanoAODv15/latest/jet_jerc.json.gz]	417.577	1.390	5
test_load[JME/Run2-2018-UL-NanoAODv9/latest/jet_jerc.json.gz]	334.098	2.434	5
test_load[JME/Run3-23CSep23-Summer23-NanoAODv12/latest/fatJet_jerc.json.gz]	333.706	2.467	5
test_load[JME/Run3-23CSep23-Summer23-NanoAODv12/latest/jet_jerc.json.gz]	329.674	0.501	5
test_load[JME/Run2-2016preVFP-UL-NanoAODv9/latest/jet_jerc.json.gz]	273.660	0.930	5
test_load[JME/Run2-2018-UL-NanoAODv9/latest/fatJet_jerc.json.gz]	259.699	1.441	5
test_load[JME/Run3-22EFGSep23-Summer22EE-NanoAODv12/latest/jet_jerc.json.gz]	259.174	0.990	5
test_load[JME/Run3-22EFGSep23-Summer22EE-NanoAODv12/latest/fatJet_jerc.json.gz]	256.966	0.944	5
test_load[JME/Run2-2016postVFP-UL-NanoAODv9/latest/jet_jerc.json.gz]	250.602	1.373	5
test_load[JME/Run3-23DSep23-Summer23BPix-NanoAODv12/latest/jet_jerc.json.gz]	242.207	2.041	5
test_load[JME/Run3-23DSep23-Summer23BPix-NanoAODv12/latest/fatJet_jerc.json.gz]	241.255	0.718	5
test_load[JME/Run2-2016preVFP-UL-NanoAODv9/latest/fatJet_jerc.json.gz]	236.777	0.321	5
test_load[JME/Run2-2017-UL-NanoAODv15/latest/jet_jerc.json.gz]	234.417	1.882	5
test_load[JME/Run2-2017-UL-NanoAODv15/latest/fatJet_jerc.json.gz]	232.670	0.549	5
test_load[JME/Run2-2018-UL-NanoAODv15/latest/fatJet_jerc.json.gz]	223.637	1.125	5
test_load[JME/Run2-2016postVFP-UL-NanoAODv9/latest/fatJet_jerc.json.gz]	223.064	1.879	5
test_load[JME/Run2-2018-UL-NanoAODv15/latest/jet_jerc.json.gz]	222.458	0.710	5
test_load[JME/Run3-22Prompt-Winter22-NanoAODv12/latest/fatJet_jerc.json.gz]	220.530	3.449	5
test_load[JME/Run3-22Prompt-Winter22-NanoAODv12/latest/jet_jerc.json.gz]	218.865	0.427	5